Well, as sad as it is, such advice is often applicable to new projects when you still have runway for your own decisions.
For mostly political reasons, if you are onboarded to a team with a billion microservices and a lot of fanciness, it's unlikely that you will ever get approval or time to introduce simplicity. Or maybe I just got corrupted myself by the reality where I have to work now.
There is definitely a wood for the trees issue at bigger companies. I doubt there is an architect who understands the full system to see how to simplify it. Hard to even know what "simpler" looks like.
For mostly political reasons, if you are onboarded to a team with a billion microservices and a lot of fanciness, it's unlikely that you will ever get approval or time to introduce simplicity. Or maybe I just got corrupted myself by the reality where I have to work now.