The game did not kill your graphics card. If it were capable of that (It isn’t) there would have been dozens, or hundreds of reports by now, as there were when a similar power issue cropped up with that Amazon MMO. It didn’t do that though, because there’s nothing wrong with the game that could cause that.
I agree with the second post. Horizon 5 isn’t to blame. Very likely had you been playing another graphically intensive game that your card would have died. I’ve played the game a lot on my RTX 2070 and it’s still going strong.