Really? Tilde is a dead key on a typical Swedish keyboard, meaning that you have to type AltGr+~ followed by space. Technically, the space is not needed for letters that ~ doesn't compose with, but having to think about that is part of the pain.

I also can't agree that it's almost the same hand movement, you have to use your right thumb for AltGr while also reaching for the key with your right hand. On an English layout you'd use your pinky for shift, or even your other hand.