It's not "difficult.". For 80 bucks, as long as your friends aren't ungrateful dicks, you can play four player games.
It's more like $140 more than I intended to spend as a baseline, since I won't be using a solo Joycon, my friends wouldn't be using solo Joycons, I already planned on buying myself a pro controller, and someone might not mind using the Joycon Grip. Is this how it's going to be for everyone? No, obviously not, some of you will just use the solo Joycons and be fine with it. That's not the case for me and my group of friends, though, and I don't see how that's so contentious of a point to make.