Why not? I think it's just an interesting side project fo the dev. This is a port of the original version for modern home computers, so it's not like they're limiting their audience.

But I would suggest that while it should be possible to make a good adaptation for 3rd generation systems (NES etc.), you're not going to be able to make a substantially similar product until you reach at least the 5th generation (PlayStation etc.), and perhaps not even then. The blurry parallax backgrounds, high number of particles, and level of detail make it necessary.