Not surprising at all. It's a forum run by a VC firm populated with a decent number of people who are wannabe founders, trying to jump on the latest fad, hoping to win the startup jackpot.
And (way back when it was small), I think a big part of the appeal was you could rub shoulders with some VC people and founders who actually made it.
> It doesn’t even seem to occur to people that one might pursue a doctoral degree because one is interested in the subject and wants to do research.
I think it does occur to people, but that's a choice for nepo babies and aspiring monks.
> It’s always talked about as if getting a PhD is just another rung in a long ladder towards… earning a lot of money? Not only that — it’s apparently such an obvious fact that it’s an unacknowledged (though implicitly present) assumption in almost every comment here.
I don't know about "earning a lot of money," but the whole PhD thing seems to have gotten super exploitative. Passion is one thing, but it's not a good thing to get taken advantage of. IMHO, long and difficult educational programs should be designed to guarantee a high chance of a reasonable stable and comfortable outcome.