Earlier quoted context omitted.
100%. The reality of moderation on Reddit is absolutely horrifying, like flipping over a rock and finding a pile of decomposing rat carcasses underneath. It's unbelievable, for instance, how often comments going against the grain are "shadow removed".
I find "throttling" or "shadow banning" to be far more objectionable than simply banning / removing comments. At least if my post is deleted I can tell. But when companies artificially limit the reach of content they do not like, you might never know. Facebook openly admits to doing this. They are playing god by curating which information is worthy / unworthy of being seen, as well as presenting a warped view of real…
You may not even have been aware that the above is a thing; most people aren't. But in my experience it accounts for a large fraction, if not the majority, of moderation actions against real human users on Reddit.
Shadowbanning is very similar but IMO less insidious since it's a lot easier for human users to notice. I'm not sure if per-subreddit shadowbans are a thing, but I lean toward no because it has not happened to me (that I'm aware of).