Not sure why one would purchase a D&D 5e game if they despise D&D 5e combat.
Because that is the FR game that is being made, perhaps? I generally don't play RPGs for the combat at all; so I dislike TB systems because they tend to extend the part of the game I don't find enjoyable, and I loath things like contrived boss fights which are generally the worst aspects of videogame RPGs.
I'm probably not as anti-TB as Kanisatha, and I think Larian are mostly doing a good job with the game. So, I will play it as intended, and see how it goes. If the combat turns out to be as mind-numbing as it could be, then I will also look to avoid it as much as possible; if combat turns out to be relatively quick to progress through, I'll continue to play as intended.
@etonbears, your RPG preferences and mine are exactly alike. I couldn't have put it better.
@Stabbey, if your question was meant to be sincere, then my answer follows what @etonbears said. It is because I love the FR setting and I love FR and D&D lore. That's the very reason I am here and why I am passionate about this game not being what I would've liked (I only registered on this forum after the BG3 announcement, and had no reason to post anything here prior to that). If games set in the Realms were being made right and left, then I wouldn't care about this particular game. But I don't get anything from the Realms anymore, including no longer even the novels that I love, so I very much miss having FR lore to consume.
D&D mechanics/ruleset, on the other hand, I really don't care for much. I find D&D mechanics to generally be lousy, and it sucks that because D&D has been around for so very long, everyone has this mindset that D&D rules are it and there cannot possibly be anything better, which in turn keeps RPG studios from coming up with different mechanics. And when someone tries to create something different (like PoE for example) a lot of RPG gamers won't even give it a chance because it is not D&D/D20 and they cannot wrap their brain around something that isn't at least similar to D20.