Usually the kind of person who rants about "snowflakes" also tends to be low-key (or sometimes explicitly) bigoted.
I think you pretty much proved the CL poster's point of the ad right there in one sentence. Nice job!
Indeed. Let alone before you actually join. Imagine not knowing, and then at a gig this guy goes on a rant on the mic?
So you, as a member of this band, would have an issue with the person on the mic "going on a rant"? Assuming it was a viewpoint you did not agree with?
And if this "rant" happened, what would you, as the bass player, do? Make a scene? Quit? Take the mic in a counter rant?
Again, demonstrating "The WHY" the CL Poster put this in his ad.