I used to have an account on the PB many years ago, but my credentials are no good anymore. I'd like to post some movie and TV show dumps somewhere, particularly that'll be indexed by Torrentio and searchable to debrid users, but I'm having trouble finding anywhere with open signups. I'm specifically uploading English media.
Sadly it doesn't work almost at all with the *arr suite even with flaresolverr.
I have had to move mainly to the small private tracker and knaben because torrentgalaxy and 1337x both stopped working in prowlarr because they had to up their bot fighting game...
I hear that public trackers are pretty good. But if you have a lot to upload, getting into a private tracker gets you a lot of credit, so you can download more high quality stuff.
Based on that your choices are to apply for uploader status at 1337x, ThePirateBay, TorrentGalaxy (if it ever comes back up), or maybe Rutracker if you can deal with the English/Russian translation. Just getting an account at those sites may not be possible but you'll need to try that to achieve what you want. Not sure if they'll give you uploader status if you're just uploading the same movie/tv content they already have.
If you don't care about Stemio you could try uploading to BitSearch / SolidTorrents, those are DHT crawlers (same database I believe). The admin does allow people to add torrent hashes to the main database there.
Ah yes I think you're right, good catch. There isn't any distinction between a regular account vs uploader, they just use their skull system to denote "trusted" uploaders.