I wouldn't say being able to use illegal roms is useful to the industry.
In that same sense you might as well make fun of everyone who buys a physical copy of a retro game instead of running an ISO in a emulator. If you're going to run illegal roms on a wii why even bother collecting NES/SNES/N64 etc just use roms and emulators for free too.
But you just use those legal homebrew apps. You'd never run illegal back ups.