My main point is, you can be working with people that are pretty smart and well educated, with a pretty good baseline understanding of theory but that doesn't always mean they have the actual experience and/or thorough enough understanding of a given set of tooling and environment to implement correctly.

I say this as someone who is autodidactic (self-taught) with regards to software engineering. I never stop learning, reading, experimenting and just gaining as much understanding over everything I touch as I can. My mind doesn't always work like most people. And my statements are not meant to be insulting, just my point of view from the outside...

In that, I feel that a lot of FAANG (whatever the correct/current conflation is) tend to rely on a lot of focus that tends to favor those with a formal education, and those closer to that education (less experienced outside school). In practice, my experience is that this will lead to an excess in "Enterprise Pattern" usage as well as unnecessary complexity which leads to an increased risk of error.