Mu. You asked if leader is defined by challenging things. I gave an alternative definition with an example of leaders not challenging things. (and sure, there are also those who do challenge) No-platforming is a completely different topic, and I have expressed no opinions about it.
You didn't just give an example of a leader who doesn't challenge things. You literally stated that if a follower disagrees with the leader, then "by definition" he/she is not a good leader.
You are implying that the definition of "leader" includes that you can't challenge things people may not find ok (disagree with).
You haven't responded to my point here, this is just playing semantics and making me guess your definitions.
Despite how you are dancing around responses, from where I see it: You are clearly denying him a platform by saying he shouldnt be a 'leader' (ie. keep his posts). You are making that decision by institutions instead of individuals. You are holding all the worlds 'leaders' to your own moral views which is logically inconsistent.