Because a programmer who knows how to do this will find it simpler to just create alt coins manually. No serious programmer uses "creators".
This.
This wouldn't be generated for serious programers. it would be created as a proof of concept, released very specifically to overflow and then crash the altcoin market: to destroy the copy/paste coins by allowing anyone to make them, and see how easy it IS to make them.
These coins aren't being pumped out by real programmers. they are being pumped out by someone who just learned to compile in highschool courses and knows how to use search and replace.
Or in the case of say, gamecoin, not even that.
Right now, we have a ballon 1/3 full of shit, the rest empty. You don't know what's in the balloon, at least, most people don't, they just think "ok, great, altcoins!" and each new coin just seems like another drop in the bucket.
If something is created that allows ANYONE to shit into that balloon, it will explode, and everyone will be like "oh, it was full of shit, well.... shit"