Do wystones actually affect Magala family monsters?

I know that wystones help knock frenzied monsters out of frenzy, but as far as I can tell, the Magala (Gore, Chaotic, and Shagaru) family monsters spew frenzy inducing attacks throughout the entire battle whether they are in rage mode or not. Maybe I'm missing a difference between frenzy and rage on these monsters, but it also seems like I can knock Gore out of his rage/frenzy without wystones. Maybe I'm thinking that Gore's rage is his frenzy state when it isn't.

Additionally, even whenever I play with Gold Crown players, they don't seem to be using either of their wystones whenever we fight one of these monsters which makes me question further if wystones are good to use against them. I also can't tell if Brace is giving me a defense boost against the attacks or not and I haven't noticed any excessive bouncing so I don't know if Drive is working either.