Participate in a well informed debate on monetary policy, but some idiot downthread went on an anti-semitic rant?
Your account will be banned. Your ip address will be blocked from creating additional accounts. You will receive a link in a message to the message you wrote for which you were banned, but since it was deleted it will be a worthless link. You will receive a link to a form to appeal your ban, which goes straight to dev/null.
Worse, they use browser fingerprinting AND IP.
It's your email, social account, ip/location, browser fingerprint info, search terms, information from their partners (ad networks, apps) and cookies, subs you visit, what you upvote/downvote/save/report, which page on reddit you're coming from/going to, etc. They use these to then determine blocks/shadowbans/counteract your votes and so on.
Has this resulted in a substantial quality increase on reddit? Oh absolutely not, you'll get chatgpt bots, people harassing you, completely unrelated comments, report abuse, etc. but they'll never give up that much data.