[Im A Bald Eagle]

i think damaging testers shouldn't be kosable for the same reason hiding diamond blocks shouldn't: they ruin they game and make it less fun to play

I mean, "ruining the game" and "making it less fun to play" is subjective. For some, using testers and completing map objectives is fun to them. If you aren't a fan of it, then nominate/vote maps that don't have game ending objectives or traitor testers. In my own opinion, if a map has an innocent objective and someone actively hinders that objective, it's KOSable.

i have no problem with that. my contention isn't that neither should be kos, it's just that they should be treated the same. to be honest i love map objectives because they go out of their way to be a challenge. meanwhile testers are just there

They are treated the same am I wrong...?

You cannot KOS someone for hiding diamond blocks on minecraft b5.