Deadpool 3 announced

So why is it rated R? Blood and gore, cursing? I ask because I have 3 boys I want to take. 19, 16, and 13 (I’ll leave the 7!year old home). How bad is it in terms of “will he be scarred for life due to some explicit scenes” bad?
I haven't seen it, but based on the previous ones, a ton of cursing and lots of violence. It's not unlike what you see on The Boys. So I'm guessing this one isn't all that different in that respect.