We've banned this account for posting a huge number of unsubstantive comments. That's not what HN is for. It's supposed to be for thoughtful, substantive conversation and intellectual curiosity.
If you don't want to be banned, you're welcome to email hn@ycombinator.com and give us reason to believe that you'll follow the rules in the future. They're here: https://news.ycombinator.com/newsguidelines.html.
I think the point was that the user's comments didn't add much value to the site. If you don't have anything of value to say, then don't say it. Reddit is probably a better platform if you just want to say "nice", or something.
Part of what moderators do is ban accounts that break the site guidelines repeatedly, especially when they are respawns of previous accounts that broke the site guidelines repeatedly.
Haha thank you kind stranger! I've been a member since 2012 and while I've visited my profile tons of times, for checking comments and submissions, I've apparently never stopped to look at the settings and what they might do. I have a userscript that makes the main view 69ch wide and blurs my username, but I've never even been aware that the site actually has its own customization settings. :facepalm: