To be clear, they are having bad wrong fun?
They're complaining that the game is so poorly written that they have a hard time knowing how to play it right.
They're complaining that their fun is being ruined.
I'm saying that they might actually have some fun if they stopped trying to exploit everything.
If anyone at the table I play at tried this or umpteen other things that people argue like this everyone else at the table would give them some serious side eye. I don't like to play at any table where even a single player isn't playing in good faith.