It's no Berzerk, but ET isn't really so bad as people meme it.
Eh, i can think of worse ones. Quite a lot of those actually
It's "optimizing things to prove you are smrt" (yes that was deliberate). Playing a complicated game only proves you are wasting your time. For half that effort you can learn something helpful
calling factorio the worst videogame implies you think there are good games out there to play - which ones would that be? (And why wouldn't those also be a waste of time?)