If unfamiliar with the Super Ghouls 'n Ghosts example, I have a ten second clip on my personal Twitter and YouTube (same clip either way). Footage is from the Nintendo Switch Online games library dealie, meaning a significant number of you probably have access to this interesting (and absurdly difficult) game.
If you do NOT have the gold armor, the Jester turns you in to other things.
When the game was new, I basically considered it my goal to find treasure chests in the hope of encountering the Jester. That was it. That was the game.
I know there's a lot one could criticize about wanting to turn massive masculine ogres into confused bunny girls, and I likely don't disagree with those criticisms.
I still want to DO it, but I understand.
Open World Zappery
I've attempted to mod all sorts of transformation nonsense in to Fallout 3 and Skyrim. Making a gender-related ray gun in Fallout 3 isn't difficult, but the results are... QUITE questionable. For one thing, facial hair isn't going anywhere, so if you want beards to go away, you pretty much have to preemptively mod them out of existence.
I recall other games not playing so nice, and getting weird glitches if you tried to do similar things.
Granted, it's possible, POSSIBLE, that non-Bethesda open world games might be more stable. But this actually is a case of trying to do something the game never intended, so it actually is a bit unfair to judge that when there are plenty of cases of the games doing strange things when doing things as intended.