Because you asked. I am not a CTI grad. Air Force terminal, 9 -->12 en route.
"The academy is easy."
Perhaps. Perhaps not. That's highly subjective. The point isn't whether the academy is easy or not. The point is if the academy does an acceptable job at screening people who will have the highest probability of achieving FPL. I don't know the answer to that. I don't have data to support a statement one way or another. What I am saying is that there are some people who washed out of the academy that would've achieved CPC (just the same as there are people who passed the academy and became CPC who have absolutely have no business working traffic). All it takes is one bad day on the wrong day in OKC and your FAA career is over. For the most part, I'd say OKC does a decent job of removing people that may not have success at the facility level... that's just a guess though. I generally hold the stance that despite it's imperfections, OKC is a net positive because we are removing people who haven't proven that they are worth facility time and resources in the form of OJT... even if that means removing a few that deserve it but had one bad day (and that day happened to be a day they were running two check rides for a final grade.) I'd rather have X trainees in NAS OJT with a 85% success rate than X+50% more OJT with a 40% success rate. It would be a bigger waste of OJTI time.
So you are a CTI grad, a CPC, and certified at an 11 and a 12. That's great. Three cheers for you. I always find it odd when controllers try to use their credentials as if they are some sort of justification on how their opinion is correct. What we should care about is how the agency can get the most amount of bodies with the highest likelihood of certifying into OJT. But then again... you did certify at an 11 AND a 12 so you might be right.