Reaganfan was banned at a time when moderators seemed to be actively looking to ban certain posters (and getting a lot of backup from the some of the worst of the Left here). Why exactly he was permabanned I don't know, but it came not long after Famous Mortimer was permabanned. After he was permabanned, a few of the worst here suggested that I should be permabanned next.
Naso and Mortimer were completely different situations from you. I wasn't a mod at the time but I supported and still support both of those bans. I vigorously opposed the idea of banning you then and vigorously oppose it now.
Reaganfan got overtly antisemitic. The posts can't be accessed now because, well, they were deleted, but they were bad. With Mortimer the problem--and the reason an admittedly somewhat threadbare excuse for his ban had to be trotted out--was that he deliberately spaced out racist, sexist, and religiously prejudiced remarks (including against conservative Christians on at least a couple of occasions!) widely enough that the normal pattern of escalating sanctions couldn't be implemented. This has been an attested strategy of evading mod action on this forum for a very long time, so it isn't something that the mods just made up while attempting to wrap their heads around Mortimer's posting style.
A threadbare excuse never seems to be used on, say, ProudModerate2, or Badger, or even R. P. McM who had few friends here, but it took pulling teeth to ban him.
When you say that (and I appreciate your honesty), you are saying that the moderators "do it because they can". I recognize that this is the way with a lot of the world, but it does seem to stick in my craw when (A) it's seemingly done only to conservative-leaning posters and (B) it's never done to the posters who are the worst with personal attacks, trolling other posters, libeling other posters, and just being lousy human beings (all the while virtue-signaling about how others are racists and transphobes). So, yes, this does bother me. Perhaps I shall learn to chalk this up as to "taking this sinful world as Jesus did, and not as I would have it". (That's part of the Serenity Prayer they never say at 12 step meetings, as it would scare people almost as much as "Accepting hardships as the pathway to peace".)
If I've been a bit intense in my responses over recent weeks, think how it rubs people when they deal with people who "do it because they can" or "don't do it because they can". This is a thorn in my side because whatever my faults in life, I have spent a lifetime cultivating and guarding a reputation for fairness and justice in my dealings, and that's an expectation I have of others. I suppose that everyone has their area of disappointment they have to live in for one reason or another.