I wouldn't.

They'll ban you if they catch you doing that and they may very well do basic browser fingerprinting so even switching IPs behind your VPN may or may not help if they think you're using two accounts yourself or established two.

In practice no. I don't think you could do that account sharing as most private trackers would notice a whole lot of IPs including sometimes at the same time using one account in an anomalous way. In particular seeding from multiple IPs looks very strange unless they're hosted seedboxes and even then many trackers restrict you to 1-2.

Inevitably a bad actor would do H&R's and get the thing banned and may get the inviting account banned or in trouble. (Cabal trackers in particular will nuke a whole invite tree all the way back to the original inviter if someone does something like that)

Private trackers are not hard to get into or stay in. You need patience and the willingness and ability to seed content for a minimum time frame. The most elite ones sure are very hard or nigh impossible but you can get into really good ones that cover the needs of all but the most obscure media collectors by just camping /r/opensignups on reddit.

Interestingly it doesn't look like TL has done an opening up this holiday period. Nor any of the other big ones. Might be because they are at capacity right now. Still I would bet on TL doing an open sign-up period by summer of this year (could come next week, could be in June, just have to keep checking, it'll come). You just have to be patient and keep checking. If you can't manage to get into and stay in good graces on TL then you can't manage any private tracker IMO as they are incredibly easy and lax.

You can also go the slightly harder route (but less dependent on waiting around and snagging invites) of applying for and getting into trackers like RED, establishing good ratio and parlaying that after 6-12 months into using their invites forums to get invites to other places. Though be warned it will take active management, research, study, and work on your part as well as constant seeding to go that route. Still it can open the doors more quickly to getting into the more elite trackers within a couple years as opposed to a lot longer or never going the opensignups route.

And there is the really easy way of just paying your way in. Many decent places allow you to buy your way in with a few months of VIP though if you drop the VIP you better follow the rules and seed and contribute or many will kick you out.

Funny as that would be, I'm pretty sure they would catch on quickly. They know what torrents you download and they track your seed rate, I assume by adding an account identifier to the torrent file. Because they know it's you despite your IP being cloaked by a vpn. They also track who invited whom so I'd be screwed too lmao.