Yes you can KOS off of that. It's not really a KOS off of skin, but logic. The only way you could have that model is if you ID disguised a consumed dead body. So it's perfectly fine to KOS off of that.
It depends on the other visual bugs/glitches. This one is quite obviously okay to KOS on. It would be pretty dumb to let someone run around like that knowing full well the only way to do it is listed above.
Yes it's metagaming to knowingly let a T do that and go along with it, acting like nothing is wrong.
KOSing off skin is a problem because multiple people can use the same skin. Since a skeleton playermodel isn't a thing, this is not an issue.
It depends on the other visual bugs/glitches. This one is quite obviously okay to KOS on. It would be pretty dumb to let someone run around like that knowing full well the only way to do it is listed above.
Yes it's metagaming to knowingly let a T do that and go along with it, acting like nothing is wrong.
KOSing off skin is a problem because multiple people can use the same skin. Since a skeleton playermodel isn't a thing, this is not an issue.