Hackers do what they do for a variety of different reasons. “Risk free practice”, protecting of big orange number, trolling, having people look up to them, etc. I wouldn’t say its the difficulty’s fault that hackers exist, its just that people are too lazy / scared to properly learn the game. Most hackers want to eventually stop doing it though, I know that for a fact.
It’s really interesting that you pick MBC’s drivebys of all things to label “unfair.” Even in double drivebys micrododging between them or spamming HP Pots is difficult, but really only takes a few tries / unfortunate deaths until you get it down. I would have put spiders / bats / big red mushrooms in Fungal at a higher “unfairness” level.
edit: And there’s definitely a touch of irony to calling stuff like that “unfair” in a what a lot of people describe as an rng skinner box. For some enemies, if you’re standing in the wrong place, you die. Scratch that, for every enemy, if you’re standing in the wrong place, you die lol. Post priest / pet nerf, dodging is more important.