I come from a games background as well so am probably deaf to how domain specific things are. But people spending far too much time making something too generic or an extensible, pluggable doodad with its own DSL rather than creating the simple, dumb version you actually need is actually quite common IME. Engine code (which is partly framework building) is very susceptible to overengineering and attempted future proofing.

I don't think they're being introduced as red flags to say "call bullshit on this and don't do it" but to be aware in the following cost-benefit analysis.