I think a human/cyborg relations droid expressing pain is different from a box with legs that I think is basically a walking battery?
Again, if that’s your opinion, you’re perfectly entitled to it 😃. Since there is no right or wrong answer to this hypothetical question, you’re not wrong because you can’t be. Neither can I. However, personally I find it an extraordinary and implausible distinction since they’re both basically machines. If we try to apply some logic to the Star Wars universe (which I’ll be the first to admit is always a bad idea! 😉), since the droids we see throughout the saga are clearly sentient, if they’re capable of being programmed to feel pain, then there’s absolutely no reason not to do it. The benefit to the droid is obvious, and it’s the same reason humans feel pain; to know when they’re being injured so they can try to do something to stop it. On that basis, the gonk droid would be able to feel pain and hence that ability could be exploited to torture it.
I’m not going to claim it’s my favourite scene of the saga, or even Jedi, but I certainly don’t hate it. There are far more deserving candidates for excision, IMHO, namely almost all of the Special Edition changes apart from Oola’s scenes and the animated Sarlaac arms (but not the beak, obviously; that abomination can be binned and won’t be missed by anybody).