Is slack a private social club and other issues my sorry ass has landed itself in

[Angrboda]

So...saying it can be considered an insult, makes it comparable to a racial slur?

Still waiting on your explanation of how the two are different in any essential way, which you apparently aren't going to give, because apparently staff don't need to justify their opinions. That burden is reserved for us peons.

slur

noun
noun: slur; plural noun: slurs

1.
an insinuation or allegation about someone that is likely to insult them or damage their reputation.

It seems the only difference here is that one class of persons involved constitutes a race, and the other constitutes an economic or cultural class.