It looks shady to me too. The explanations are somewhat reasonable, but anybody can come with those. There's also a very good chance that they are not related at all with the original Pokereum.
However, this that old Twitter handle not posting since 2019, with the old domain actually for sale, ... the old business can easily be considered dead. So it may not matter much if they replace that.

I see two more real problems here:
1. Without escrow all those jumping into the campaign may get scammed. And the miscalculation of the funds is unprofessional at best.
2. The new Twitter handle has link to the campaign held on Bitcointalk; some may (wrongly) think from this that they're somehow endorsed by Bitcointalk. And if Pokereum turns out to be a scam, some may blame Bitcointalk and Bitcoin. Nothing new under the sun, still ... not a nice thought.

I would stay away...
Still, I don't have any proof for wrongdoing so I cannot tag...