Can you elucidate us with how exactly this is an advancement of web technologies per se? I agree with OP comment that it's strange to adopt web3 as a moniker when it is a distinct stack/infra much akin to IPFS in spirit.
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web1 – the original web, decentralized information sharing but everyone is hosting their own stuff
web2 – make it easier for people to create stuff, but it's all centralized (boo), which in turn makes the interop of the original web much less present. i.e. gatekeepers everywhere
web3 – allow the unfettered creativity of web2 with the benefits of decentralizing in web1. You can use one "account" to login to any web3 service, people can send money to that same account, etc, etc.
In other words, web3 allows you to do things that weren't present in web1 at all without all the web2 centralization/gatekeeping baggage.
Web 1/2/3 is a designation of the global structure of web, if you don't see how 1 and 2 differ (like op) then you don't care that 2 and 3 do.