When are bombs OK?

[Sundance]

So after a recent enough round where I witnessed someone using black powder to mess up a traitor and gib him while also damaging (albeit minimally) the station and without any loss of life other than the traitor and severely damaging himself, the significantly salty traitor bemoaned that weaponisizing explosives as a non-antagonists is not cool, no matter the circumstance.

I'm inclined to agree with him. Being in situation myself where I was pipebombed as a wizard who literally just arrived on the station by someone with a bag packed to the brim full of the aforementioned explosive.

I've been of the opinion that bombing is not ok as a non-antagonist, and the only point where it's ok is at literal last resort, something absolutely unholy admin spawned antagonist that is literally messing up shit in its path and lastly, blobs.

..But the reaction I got was tepid, hostile and demeaning. Not surprising, ghost chat is cancer, but it's ALWAYS been the unwritten rule that it's not ok, never has been ok, that bombing someone as a non-antagonist (no matter what the bomb) is incredibly shit behaviour. This is coming from someone who has witnessed this over years, so I'm not just pulling this opinion out of my ass.

Discuss.