I think cargo cutting stuff like "Postgres for everything" is also a plague. I agree you don't want to overengineer, but if you're a leader and your policy is basically "engineers can't ever be trusted to do hard things" then you're a bad leader.

Sorry if this comes off as brusque, but I've seen good engineers want to use Elasticache for the right reasons and seen "leaders" tell them no because "caching is one of the hard problems in computer science."

Leadership-by-folksy-saying is sadly a real thing.