The whole prime access is a p2w mechanic that prior to Liches was arguably considerably more important.
Now with Lich, Sister and Railjack weapons that are all play-only access.
Galvanized and Prime mods you can’t p2w.
Nevermind the whole Steel Path and incarnon adapters, where while a small set is plat available, and the only good weapon in that set is the Angstrum, and aforementioned Galvanized mods.
I don’t 100% agree with prime access being pay to win. It’s mostly pay to skip, you can use your platinum to buy pieces from other players for normally far less than the frame and weapons in access as well. I spent 5 bucks to get a protea prime from a clan mate knowing I wouldn’t have time to grind her and had tons of platinum (premium currency) from other trades with players. And I’m really bad at trading with players.