Parading

Call the player on their PG, if they persistently give a hard time and no other options are available, either get GM intervention or post a SR with screens.

I roleplay. I don't go round mobslashing in a forest to boost my skills. Would that make me a less skilled fighter?

No, I do not think you should have to grind, but I do not think anybody should be a master of all skills. I see people who are supposed to be warriors, farming, mining,cooking, basically doing everything you can. Maybe a system where you get certain skill traits, without the annoying grind. I think that would be better.