Mentors...please!

[Tamhas]

We don't know what happened so we don't know that the behavior was rude let alone toxic.

Could it be you were overly sensitive to whatever happened?

Again, we don't know. We weren't there. We do know that the rest of the group didn't agree with you.

It`s simple. If someone says to you «You 're an idiot» or «*** you» will you be insensitive? Or (different people have different kinks) do you like it? Maybe in some culture these are polite words? Let me doubt on this point.
Of course, it`s possible not to believe in examples of unsuccessful communication with mentors (not by the players fault). But it works both ways. Thus, evidence about good and understanding mentors can be questionable. Because... «Again, we don't know. We weren't there»© Sophists invented these techniques a long time ago.
It would be more reasonable to proceed from the thesis "there are non-toxic mentors, but there are toxic and indifferent mentors - this is a problem." There are problems in the system. What decisions? This is a real topic of discussion. Single reports on rough mentors, as said above, do not give results.