Not the first, NEStalgia has a fully standalone version too, the only interaction with BYOND is the OPTIONAL ability to login with your key. But good job anyways :)
Screw them, they had help from Tom. Besides, mine doesn't install BYOND and doesn't require the Internet, and the one you're referring to for NEStalgia doesn't seem to be public yet. So again, screw them.
The 'screw them' attitude is pretty lame on your end, what NEStalgia is doing is the reason you're going to find it much easier to do things like this in the future; it's a beta test of a new feature. Quit being a baby.