Guess I'll move my post here, since there is a dedicated thread now.
I don't dislike the idea that now that Lara finally broke free of her duty, she can explore the world and find herself and better understand her wants without the future of her people hanging over her head. But there wasn't enough build up for this kind of ending. The whole episode seemed to be building towards a huge romantic moment (you know, like sacrificing yourself for your loved one) and the epilogue was kind of the complete opposite. It felt like it was written by a different person altogether, or like this ending was decided on an earlier draft of the story, but it no longer fit the story as it came to be. It isn't terrible to me, mostly just underwhelming. The implication is, of course, that they will meet again and that they will live together again in the future (which is okay, though I don't really understand why she would just leave by herself if she wants to be with Mari. They could certainly go travelling together if she wants to explore the world but whatever).
I was actually mostly—and extremely—pissed off about that one Luca scene and the line about "dating and breaking up countless times" (wtf???), but looking more into it (and trusting the ever reliable reddit lol), it seems that this was just a (terrible) translation issue.
Anyway, I really enjoyed this series even with the somewhat lackluster epilogue. Though, reading through the comments here actually pissed me off again about the epilogue lol. I can see some commenters' point about how this is an example of writers refusing to completely commit to a lesbian ending and to showing physical intimacy, though as I was watching it, what I was just thinking, this doesn't feel like how Lara would act in such a goodbye. I think the epilogue would be infinitely better if they had the two be closer: a temporary-goodbye kiss, or even a jug or holding hands, just to make the promise of living together again feel less distant. I am not surprised with the way they refused to show Lara's face up until the end; this is a storytelling device I've seen used a thousand times, though one I am not personally very fond of, and one I think was unsuited to this story. It made Lara feel even more cold and un-Lara.