But in how many cases is there no actual wrongdoing/misuse/rulebreaking, but an internal mistake, blind application of filtering that catches someone inadvertently, or a vindictive employee cutting someone off for <reasons>, and no one can tell the difference because of that no transparency?

I get the little guy means nothing, so why bother, but some level of "Yep, that was a goof, you're back, sorry" would go a long way.