IIRC, the main issues about FO:T, among hardcore fans, were that: a) it wasn't FO3 b) it disregarded Fallout canon in many aspects (i.e. furry Deathclaws, fossil fuel powered vehicles, BOS portrayed as a bunch of extremists...etc.) despite taking place in the same setting. Save for that, a lot of people thought that FO:T was a fun game in its own right (and genre).
I like to consider myself a hardcore fan, a fanatic. I never paid much attention to the Deathclaws biology, sexual mating practices, eating habits or any other thing about them. The concern for me is they could kick ass and were hard to kill.