> Disagree. Insults are a problem if and only if they cause third parties to have unfairly* diminished regard for you.
To give a topical example, there does not appear to be any insult which affects Trump: if you hate him then the insults prove you right, but if you love him then the insults are just fake news.
In societies where 'honor' killings take place, insults do cause third parties to have an unfairly diminished regard for you.
Here's an example closer to home - when a drug dealer gets ripped off for $500, he doesn't care about the money. $500 is nothing to him. What he cares about is appearing like an easy mark, which opens the door to everyone and their brother stealing from him. It's why the correct response to that kind of insult, in that kind of industry, is to go to the offender's house, and break their skull open by dropping an ATM machine on it.
He isn't killing someone for $500. He's killing someone to make it clear that he will not be taken advantage of.
Trump doesn't need to do that, because me insulting him on Twitter will not result in other people ripping him off. He is protected from that by a working legal system. My insults are not damaging, and even if it were, he would be able to sue me. Drug dealers, and people living in the mountains of Albania have no such recourse (Or do not trust it.)