i don't like fnaf or it's fanbase, but the guy who made the game himself seems pretty chill
honestly what he probably did was he wanted to make the original game as like a standalone thing, then people made it popular and demanded sequels, leading to him rushing new games to meet such a sudden demand
in all honesty though i think the guy is great, and the first/second games weren't terrible, it's just that the whole cycle of youtube destroyed the series
I'm sorry, but why do people do this?
it's just a way of shortening speech, it's like when somebody says: "what's up" instead of "how was your day" or "what did you do today"
as long as both parties understand what "p much" means, it doesn't really matter, but if you're in a professional setting or talking to somebody who is highly prescriptive (unlike most of BLF), you should always say "pretty much" (or even avoid the phrase "pretty much" altogether because it's both excessive and much is ambiguous, it is like saying: "an emphasis on what he said" except even then you shouldn't say
that)