For all I know, Goldberg emulator only works with multiplayer titles to enable local multiplayer capabilities. If the game is SteamDRM protected, it should not work and is very illegal.

Illegality is a general issue with piracy to begin with - Valve can snap on it any time, leaving us empty-handed. It is not a sustainable solution - just the only one we're left with. Instead of not suing emulators and certain tools just yet, I'd rather see them actually removing the damn DRM. I mean, we had enough Nintendo drama, didn't we?

On my end, I make sure to purchase DRM-free games and yarrr the hell out of the DRM-protected ones, but personal activism can only get you so far.