Elon is actually a good example of why dialogue is important. You see him as a charlatan. I (with the context that I interned for SpaceX 7 years ago), see him as a flawed but impactful innovator who has pushed the state of tech forward considerably and employs 90,000 people though his two biggest companies.
Little is gained by sarcastically dismissing each others' perspectives. But by refusing to pretend that he is all bad or all good, and discussing his successes alongside his failures, we can lean into the purpose and value of HN.
Putting aside your unstated reasons why you believe Musk is a charlatan or the "Internet's largest troll", simply calling someone a charlatan will not convince people who think otherwise.
If I simply said "Biden is a charlatan", his supporters, or even those who had no opinion of him, would not simply begin to think of him as one. The same applies to if I said "Trump is a charlatan", so I am not sure what you're trying to achieve here.
By that metric, <Walmart ; McDonalds ; Nestle ; Activision ; Eli Lilly ; choose your favorite corporation> are a great boon to humanity and we would be so lost without them!
It's the same strategy with internet trolls; you either ignore them completely, or call them out on trolling and engage no further. Musk is, in some sense, the internet's largest troll. And droves of people have taken the bait.