For the same reason facebook's "college students only" rule when it first launched wasn't ageism.
It's a hook, catering to a very specific niche of ppl. If it catches on, you can bet that they'll expand with MBA2Startup and others, for more 'seasoned' vets.
Not buying it. If there was a facebook rule for "college students only", it was because facebook was for college students.
I have no doubt that many companies and headhunters look for recent graduates not because they have just been taught the finer points of development, but because they are most likely young.
If this website was slightly less veiled it would be called 20sToStartup.com, and you wouldn't even dare call that acceptable niche marketing. Maybe that's ok for cars and music, but not for peoples livelihoods.
It's a hook, catering to a very specific niche of ppl. If it catches on, you can bet that they'll expand with MBA2Startup and others, for more 'seasoned' vets.