Shadowbanning is something we only do for either (1) spammers or (2) new accounts that are showing signs of being repeat abusers. This seems to be roughly the correct tradeoff.
Obviously the intention is to inform—otherwise why bother? Those comments take a lot of time to write.
I suspect your "other comment" got flagged for being political polemic from a new account, which fits the pattern of, as dang phrased it, "repeat abusers".