Sure, why not? An automated form reply stating "Your account was blocked for the following spam posts" with a way to appeal false positives.

You might even require a $5 bond to appeal or something, to prevent spurious appeals.

This just teaches the abusive users which behavior was caught, so they can learn to be better at evading that scrutiny in the future. It is completely counterproductive for a company to provided banned users with a detailed reason for their ban.

Spammers have plenty of ability to A/B test these things to determine which posts trigger and which don't.

Meanwhile, normal users are left totally confused, with zero recourse and potentially a loss of important data and other significant repercussions.