Yeah honestly I don't get this, just because one ability is theoretically more "impressive" doesn't mean a similar ability that's in the same category would get resisted.Again, Hakai can literally make people cease to exist and not even end up in the cycle of creation and we have had Frieza and Goku withstand weaker versions of Hakai as is.
Why would Soul Theft be out of their league when they have taken basically have their existence be completely threatened?
Ripping out someone's soul = / = destroying said soul (yes I know it's existence erasure but w/e).