Its not like the idea of doing early stage funding is that new, nor is the idea of havign an application form new. Ok, so the questions may not be original-- but that's flattery, its not like the YC form is a trade secret!
Getting startups together for a fixed period in a fixed place is relatively new, and seems to be a YC idea. Ok, so what does it mean when others emulate this? IT means they think its a good idea! How does this hurt YC?
YC is evangelizing a different approach to early stage funding. Now others are emulating the idea-- there is no way in hell that this can be a bad thing!
This is called success!
Do y'all who were rejected by YC hate the fact that there are now other options?
Or do you think that these people are going to steal all the "good" startups from YC diminishing their pool?