Oh you're right. I thought the final shot was on Krakoa. I think they shouldnt have put the gate on a beach bc that part was confusing
but thats incredibly dumb on their part especially since they have 15+ years experience as mutants and they have a mutant finding device that doesnt pick them up as mutants. Suggesting that the telepath is powerful enough to block Cerebro doesnt make sense. If they were mutants, it would have backed them up at some point before he blocked it. There are other ways to confirm their mutant status like Caliban, Hope, Synch or M whom can detect mutant signatures