It's odd seeing this on hacker news. When people on hacker news are literally shadow banned, have their comments hidden with zero feedback or notice. In fact i guarantee this comment cant be seen either.
On HN, shadowbanning (i.e. banning accounts without telling them) is nearly always for accounts that don't have much posting history—either spam accounts or ones that show signs of having abused HN in the past, such as serial trolls. https://news.ycombinator.com/item?id=32040389 has links back to a bunch of longer explanations, if anyone wants more.
p.s. After a quick look, I'd say HN's system is working reasonably well in your case because most of your good comments are getting vouched for by users, which unkills them, and most of your bad (for HN) comments are rightfully staying killed. There are cases of banned accounts that shouldn't stay banned, but this isn't one of them.