I'm going to kick my friend out of our fortnite party
Why would you kick your friend out of the party?
I have no interest in my friend's way of playing.
People have different playing styles, and while I understand that yours might not mesh well with his, I'd encourage you to have a bit of patience and understanding. Kicking him out seems a bit mean and unnecessary.
I'm going to say my opinion on why I don't want my friend on my game.
You're entitled to your opinion, but that doesn't mean you have to share it with him. Not only will you hurt his feelings, but you could possibly damage your friendship long-term. I don't think it's worth it, to be honest.