And yes, ditch them. Even well over a decade ago, Wikipedia of all places already employed IP address matching to link sockpuppet accounts. You must be extremely careful of never using any device that was associated with your old accounts on the same network as the devices associated with your new account. And that includes devices only seen by association.
> Wikipedia of all places already employed IP address matching to link sockpuppet accounts
That’s… well, that’s just not how tcp/ip works. Your phone number has nothing to do with your device IP…
My boss uses Reddit some. I'm banned. At the shop, we use the same IP address (and we do not use ipv6 there).
I tried to log in with a ~10-year-old account that I'd never commented with. A perfect Beetlejuicing moment had arrived and I just wanted to play the game with a short, snarky comment.
It logged in fine, and then: Insta-ban, just like that. (Maybe I should have used a new browser on a new network that I've never used before, but whatever -- nothing of value was lost here.)
Meanwhile, the boss man's access continued unimpeded; this suggests that it is a rather targeted contagion.
And it seems to follow the systems, not the networks.
(If anyone wants banned, just let me know. I seem to have a well-poisoned system to play with.)