Your move hegemony.
Plus starting a shooting war with China isn't in our best interest, yet. If we ever get there the fishing boats will make exactly zero difference in the outcome.
Paramilitia Fishing boats are like the local insurgents in Afghani/Iraqi cities. They are still there when big expensive American boats leave the other 99% of the year. They don’t provide real military prowess but they blend in with the locals (meaning hard to permanently bully out of neighbourhoods) and constantly apply pressure tactics and surveillance resources that benefit the parent resistance org.
It also critical keeps their flags waving 24/7.
No-one wants a shooting war, but the US is eager to keep China contained, and enforcing the EEZ rules serves that interest.
The US has a far more advanced navy (a large proportion of Chinese ships are patrol ships without much tactical significance) and many more aircraft carriers. Aircraft are extremely important in naval conflicts.
Most importantly, we have tons of bases in Japan and South Korea[1].
1. https://www.aljazeera.com/news/2021/9/10/infographic-us-mili...
If each one is armed with a few anti-ship missiles, a swarm attack from many different directions might be a real threat to a carrier group. You either waste a ton of ordinance taking them all out, or some portion are able to launch against you.
It's a serious threat as everything is low low cost and big on bang.
The US would be looking at defending itself from 100+ unmanned cigar boats each packed with enough explosives to make a serious dent at water level and all interoperating like a flock of birds, some drawing fire while others push through.
With that said, nothing prevents the U.S from imitating any tactics (including swarming by tiny boats and ships) that the Chinese use effectively against the U.S and its allies in a real naval war.
To name a very current example of my first point above in action 24/7, just look at the Ukraine/Russia war today. It has evolved in ways that very few people could have predicted just before or right after it started, with surprises on both sides.
To highlight how the same worked at the beginning of the second world war, partially prompting Churchill's own later phrase: the air defenses of the UK were thought adequate against enemies in 1939, until they were proven to not at all be so, and only improved through very deadly trial and error by 1943. France in 1940 was thought by nearly all powers to be more than a match against a German invasion (and indeed materially it was, on paper and stationary on the ground), until it was proven to not at all work as expected in just 6 weeks. All things always shift simultaneously in ways that can confound any expectation, particularly in situations as ferociously dynamic as large wars.
China itself is the larger aircraft carrier. They also have advanced rocketry, which may render the other ones obsolete.
Besides 7th in Japan, there's 6th fleet is in Italy and 5th in Bahrain.
So really half the US Navy is always stationed overseas with the first fleet being inactive.
US still has more displacement via super carriers, better subsurface and larger replenishment fleet to enable more persistent blue water ops. Incidentally PLA is rapidly building up replenishment capabilities, but ultimately most of fleet will stick around PRC shores, with some moving into IndoPac for SLOC security or Africa for anti piracy. But currenly PLAN has MORE "ocean going" vessels than USN, and gap is expected to widen to PLAN 400+ wheras USN ship building lucky to maintain 300 by end of decade.
My previous comment was with respect to actual effectiveness. China has no significant blue water navy.
Citation needed. This is borderline beyond "useful idiot" hot take because even DoD propaganda/analysis or defense wonks do not allege this, and they allege a lot of dumb shit with respect to PRC modernization. Western assesment of PLAN in last few years, with respect to blue water surface combatants, being commissioned at tremendous rates, is one branch where recent DoD writings / analysis has no substantial tech/hardware criticisms, relegating to, their hardware good but maybe software (training/jointness) lacking.
Also to repeat "Many of which more modern". PLAN's blue water surface combatants built since 2010s are considered on par, if not superior with equivalent USN platforms in terms of systems and armaments, including latest flights. Certainly more than the significant portion of USN's aging hulls, many of which are not modernized to latest tech and are held together by duct tape / soon to retire. Like USN isn't going to have anything comparable to a type 55 for another 10+ years in DDG(X). It's hard to overstake the amount of USN program/procurement fuckups in the past decades and ongoing state of US ship building that enabled PRC to catch up in both quality and quantity. Majority of which concentrated in PRC backyard, on new hulls with better maintenance and readiness rates, that widens regional blue water naval power gap even further.