It's one of those movies that is a horrible part of its franchise but wouldn't be so bad just standing on its own. The only thing it really had to do with Mario Bros was it used character names and some items from the games. It was a wtf for fans but if you ignored that part, it was ok on its own.

I think similarly of SW ep 8. It's an absolute dogshit Star Wars movie but if Rian had instead made up like his own space balls universe except not really funny, and did the same movie there, it wouldn't have been bad. But instead it made me stop caring so much about Star Wars. Which isn't really a bad thing tbh, though probably not what Disney had in mind when they bought the franchise.