If I understand correctly, this feller is working on completely re-editing TLJ into something less horrible. How exactly he’d release his version without the House of Mouse and its army of attack lawyers jumping up and down on him I don’t know, but it’ll be interesting to see the final product. Vice Admiral Gender Studies does not appear in the trailer. Since the purpose of the project is to fix, as much as possible, TLJ, getting rid of the character entirely makes sense. Presumably the whole Canto Bight nonsense will be excised. There is some added dialogue; Ackbar sounds ok, but the Mark Hamill stand-in is… well, not quite on the mark. But whatryagonnado.
Note that Luke has his “real” saber back, so presumably in the re-edit he’s not phoning it in during the fight with Kylo.