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