Yeah, in a show about friends surviving dinosaurs it really didn't make sense for the last 5 or so episodes to be about 20% dedicated to a romantic relationship (LGBTQ or not). There's a fan version of the show out there that omits the romantic parts of the final season (the straight romance, too) and the final episodes are all like 5 minutes shorter.
It's a really fun show overall, even for adults. Highly recommend, though I now let parents I recommend it to know, that in addition to people getting eaten alive and nightmarish mutant dinosaurs chasing kids, there's some kissing and an out-of-the-blue forced teen lesbian relationship. I have a feeling that won't land well on HN, but in person every parent I explain that to is understanding and thankful for the heads up.