This comes across as apathy apologetics. I can tell that's not where he's trying to go, but that seems to be the outcome.

It's also a false dilema. Not wanting to see state-sanctioned abuse of certain groups, for instance, doesn't mean I need to plaster my car in party-affiliation stickers and join the campaign team as a true believer. It just means I might need to temporarily ally my efforts with other people in that particular goal. And that group of people might have a political party. Because that's a system for large numbers of people to have serious policy leverage. I'm not going to do shit all on my own.