It was murky from the getgo. Open AI immediately came out and stated it was the voice of a hired voice actor and that all four or five voice options were, and that it was the voice actor using her own natural voice. The media has just chose to mostly completely ignore that and instead wanted to run with rumors that they stole ScarJos voice from the movie or by sampling a bunch of her work, because that sounds way more gossipy.
To your 2nd point though. The trump voicing stuff is a clear and apparent “parody” which is protected to be legally used. Even when Weird AL does his music, he doesn’t actually have to get the artists permission. He just always has because he’s a world treasure.