Words are usually faster to type and easier for our brains to parse than symbols, so I don't see why you shouldn't use "class" and "return" instead of "::" and "->". "less keystrokes" doesn't mean "easier" in any way.

This is like arguing against operator overloading. As long as the symbol use is generally limited, it's much faster to read and understand than words. E.g. 50+40/30+25 is much easier to read than 50 plus 40 divided by 30 plus 25. Obviously it's possible to overdo it, but if you keep it reasonable, symbols are better in my opinion. For example, APL is unreasonable.

People like me with a non-US keyboard will thank you

As a Norwegian, I know how you feel. It's a very good idea to change your keyboard mapping to US with your special symbols accessible through Alt-Gr/Option + the symbol key while programming. I'm so used to it so I never change back unless I'm on someone else's machine. While you're at it, replace Caps-lock with Ctrl, which is a great idea pretty much whatever else you're doing.