Oh, okay.
Don’t get why them being women is relevant at all though.
It’s relevant to the history of the trope, as it’s typically women dying to advance the man plot/character arc. Val died so Woody could… punch Han I guess? And L3 died so they could cannibalize her for parts.
I don’t think “fridge” really works as a word to describe when they kill a female character, it’s a bit more specific than that. There’s an argument to be made for L3, but not Val (who is killed for almost no reason at all, so actually it’s worse).
There’s also the fact that they kinda pulled a mini Rogue One and killed almost all the new characters (save for Enfys and Qi’Ra), so again, I’m not sure if the word “fridge” works. But the spirit of your argument, that they did wrong by the female characters, is definitely spot on.