Sorry, but "neglect" is a pretty obnoxious accusation you're leveling against Alan. He's dutifully maintained Textmate 1.5.x over those years and has released many many updates. That these releases have not also served to entertain you is simply not a legitimate complaint, let alone an excuse to suspend "common courtesy".
It's not that it's not supposed to leak like some big secret. It's that it makes you look bad when you get it into the general public's hands rather than a bunch of developers that know that it's of alpha quality and it goes around crashing all of the time, corrupting your data, etc. Things you'd expect alphas to do.
Not sure why he would think it wouldn't leak out.