I mean I like simple standards, but at what point do i have to start worrying about my mouse electrocuting me because my cat chewed the cable?
Your mouse, if using USB-C, is only going to have the current it needs to run. So it'll be super low mw at 5v. Its not going to be doing 240w on it. USB power delivery isnt like your wall outlets, it asks and receives power depending on the need.