I kinda like it kinda didn't. I guess not all dimensions are the same, but wouldn't the Rick in the dimension they now inhabit that got blown up, have had a phoenix project?
Or at least would he not have downloaded into another version and wanted to come back to his dimension.
Kinda felt like they broke their own lore.
C-137 Rick did have a Phoenix project and then destroyed it after the school vampire episode. TINY RIIIIICK !!!!
He even make a joke about taking his project offline "a couple of seasons ago."