Bottom line is that the WTS doesn't reject evolution because it's implausible, lacks evidence, or is inherently "atheistic"...
...they reject it because WT cosmology requires the Eden creation narrative in Genesis to be literal history; it doesn't really work otherwise.
Looking back, it was the realization that evolution had to be true - and, more importantly, that the WTS could never budge on it - that started me down the XJW path, in fact.
Me too, Vidiot. That was quite an epiphany for me.