The thing is romance only requires a high enough approval, so this only tells that the streamer went too fast through the story and didn't obtain any meaningful approval increase, other than with Gale who doesn't even have to be in the party to gain approvals.
Personally for me all of my companions, with the exception of Astarion, are at high enough approval before I even get to the Blighted Village. By the time I get to the gobo camp they're already exceptional. And by the time I get to the celebration itself all of them want to bang me. I'm not complaining of course, but it really is that simple. The player doesn't have to work for romance at all, it just... happens by playing.
Being denied by Astarion though is pretty impressive, I thought he sticks his tongue into anything with two legs
