No it doesn't necessarily change what the emulator is used for, but it changes the optics on what it's developed for. If you develop an emulator without any methods of DRM circumvention built-in, then out-of-the-box it can only be used for homebrew stuff like making your own games/apps for that platform.

If you include DRM circumvention with the emulator, then there's an argument that it's developed specifically with piracy in mind.