This is one of those skill issues at it’s core.
FT can only parry you hitting them from the front, so if you want the big dmg combistick than you need to come in from the side or behind to get the hits in OR you need to bait the FT players into parrying before striking.
If you think parrying is stupid and FT shouldn’t be able to because you just want to face on roll them well… the answer is already in the game… use the disc and all your parrying woes will go away.