We had a suitless rollcall just last episode.
Spoiler
There are still universes where multiple Super Sentai coexist. The shot the first episode uses to represent the Gokaigers' world being sealed shows them standing in front of all the other Sentai, and the bit with Suu-san's doubles shows that, even under Zenkaiger's logic, people can have counterparts across multiple dimensions.
And it's not like the "one world" logic was ever wholly consistent before, with things like multiple villains/phenomena taking credit for wiping out the dinosaurs, with no effort being made to reconcile them, or the Kamen Rider crossovers constantly flipflopping on whether the two franchises take place in the same universe or not.