Here’s “the guy” again, who’s actually a fantasy writer, with his spoiler review of TLJ:
https://www.youtube.com/watch?v=vOdobc7jtQo
He asks a good question, that I actually had not considered (and neither did RJ apparently): if admiral Holdo can lightspeed through Snoke’s ship to allow the rebels to escape, and we know they’re going pick them off one by one once the chase begins at the start of the film, why didn’t any of the rebels (or better yet a droid) sacrifice themselves at the beginning of the plot by having one of the cruisers lightspeed through Snokes ship, such that everyone can escape?