That said, I agree that $50k/1% is a low offer. Lots of startups (at least in the SF bay area) are offering 50-100% higher than that, and these are good startups with experienced founding teams, funding from top investors, paying customers or traffic already, etc. So definitely explore your options! There are great deals out there.
I'm not saying your statement is wrong, but am I the only one who thinks something is wrong here? Are most startups worth 5-10M right after seed? I would say no.
Conservatively, I would tend to agree with the author. 2M is high for a company that only has seed money.
And that's the average; many were higher. There are probably amazing startups out there that raise at a $2M valuation, but it's definitely at the low end of the range in the current funding climate. If you're looking to join a startup, I wouldn't fixate too much on valuations, but I do think it helps to be aware of what the current market is like.
(Note that it varies by region. Silicon Valley and NYC are probably comparable, but other regions have less investment and so have lower valuations on average.)
Try this thought experiment: Mark Zuckerberg (or whoever your favorite entrepreneur is) comes to you and says he's quitting Facebook. He's going to start a new company, and he'll let you invest at a $20M valuation. Do you accept?
We're all sat here, reading about "average seed round valuations" and the like, but that concept tells you nothing about what the next startup you meet "should" be valued at. Claiming that it does means acknowledging that business fundamentals have been thrown out of the window, and what are you left with then? Gambling.
Your argument is fully general against valuing equity in any early stage business ever at any price. It equally says that the investors are "gambling" and the founders are "gambling", as much as anything about employees.
Yes, everyone who is being paid in equity is taking a risk. It is possible to attempt to assess that risk. The key to being an early employee is bringing an investor mindset to the table: do I think this company is going to be successful or not?
Simple thought experiment to make this obvious: when a company raises convertible debt with no cap, are they infinitely valuable?