The NHIs being discussed by Grusch and others have not been stated to be ETs, but rather the current thought is interdimensional.
That wasn’t the current thought in the hearing, he expressly stated that that was one interesting possibility that was discussed in a purely theoretical context
Sure, but several people have brought this up as “an interesting possibility”, and all of them have shyd away from saying ET. So they didn’t confidently or unambiguously state it, but that’s kinda the implication and where their head is at.
IIRC the proper answer is “we don’t know the origin, but we haven’t had any reason to think they came from space”.