I don't buy into this mentality. It's just wasting time. Your user suffers due to bloat and slowness on commercial software (like websites full of tracking and heavy UI design) due to economical reasons (no benefit in optimizing user perf for the company) and not due to system software like one Drew writes.
It's just kind of a LARP of "old school" and "minimalistic", which is fine. Just let's not pretend there's some practical benefit.