I don't doubt for a minute that you managed to earn a sitewide ban - you certainly seem like the sort.
All I'm saying is that mods don't have any way to give a sitewide ban and (beside educated guesswork), they don't have any way to detect alt accounts either. They don't have any backdoor access to the admins beyond the "report user" button that every person on reddit has access to. These aren't even things that are in any way in question, because a) literally anyone can create a new subreddit and see exactly what tools mods get and b) exactly these issues were infamously central to all the recent protests.
You're the one whining about your sitewide ban my friend. The only person showing signs of any butthurt in this thread is you.