I think he is more upset about the fact that imprinting takes a lot of time, and if you are a average human who has a day job, breeding has basically eliminated imprinting 100% on a lot of the larger animals, as you cannot get on while at work. The benefit to a 100% imprinted creature over a 95% imprinted creature is massive.
I know from my side, I was really hoping there was a breeding event, as that is the only way I could get a wyvern hatched, as well as some rex's. But sadly, no breeding event now puts me even further behind the other tribes, who have people in it that can be on 24/7.
While I understand why the breeding takes so long, i really think it might be worth it to also take into consideration the people who have got day jobs and would want to experience all the aspects of the came in its entirety. Playing on the PS4, and the centre, the only way you can bear the final boss is by having a large amount of rex's with all having extremely high health, and melee damage, for that you need to have imprinted 100% on all 10 generations of the rex's you are breeding. The over 4 day breeding time means that I cannot even breed 1 rex and 100% imprint it.
Putting in leave is not always an option for everybody. So please take that into consideration when you do rework the breeding aspect of the game.