Here's the thing... though. If you strictly want to farm Astrope, that's absolutely your right to do and I honestly don't have a problem with that. My problem more comes with the leaps in logic above where you're trying to imply SE is at fault for putting EX primals into roulette and for making the achievement so arduous to reach.

It makes sense to have mentor roulette include EX primals because that's one of the few pieces of content for new players that it's incredibly vital to ensure experienced players will be in their group. Therefore it makes sense for SE to make it part of the roulette - incentivizing through tomes and eventual achievement rewards what mentor players wouldn't do anyway.

It's absolutely fine to want your cake and eat it too. I can't fault you for that as I'm a billion miles from a Astrope myself. The main thing I took issue with is implying that EX primals don't belong in mentor roulette and new players shouldn't be allowed to DF it... it's by no means the best way, but it's an option that should remain open.