Don't care either.
But like you I'm happy for Horizon but quite sad for Rise of the Tomb Raider.
Even though it's a timed exclusive I hope this game does very good at launch. Tomb Raider is one of my favorite series and I enjoyed the 2013 game a lot.
Well the Rise of the Tomb Raider thing still has about 300k views on other Youtube channels, but overall I think that the vocal online Xbox community is overselling their interest in the game quite a bit due its exclusivity status. Just my opinion.