High performers on redundant teams would almost certainly be transferred, assuming there isn't some odd middle management infighting going on.
There's always management infighting, especially in lean times.
If it's just some folks getting miffed because someone from another department stepped on their toes or made some unkind comments about their team, then that shouldn't be too serious.
I'm assuming it's mostly the latter at Stripe...
The time to do that would have been in a reorg (Stripe's philosophy for that is at https://stripe.com/guides/atlas/organizations-and-hypergrowt... ) prior to layoffs.
During a layoff, if you want to transfer to a different team, apply for a job on that team if they've still got some open headcount.