Did you read the full article, including the para "At YC, we’ve often noticed a problem with founders that have spent a lot of time working at Google or Facebook."?
When people get used to a comfortable life, a predictable job, and a reputation of succeeding at whatever they do, it gets very hard to leave that behind
I think that there's a sampling bias here; in fact, that bias is even pointed out in the paragraph: > At YC, we’ve often noticed a problem with founders.... I.e., this is an observation about FAANG employees who become YC founders.
But the fact is, very few of those drive/motivated Google/Facebook employees leave and become YC founders. So this observation is an observation about a very small subset of the people who choose to stay at GoogleFacebook.
I know a lot of people at the FAANGs who are there because they are primarily motivated by technical and scientific problems. The FAANGs -- and esp their research divisions -- are exceptionally good places to work for people who get meaning and fulfillment from technical excellence.
