I don't see how this can be true when it comes to these guys. I mean, I get that the Jays haven't developed good players lately, but Syndergaard was dominant in the Blue Jays' system and Nicolino was pretty good. They were considered "the big 3" along with Sanchez for a reason. It's not like they were struggling. They were ranked as the organization's top prospects, same with Marisnick. I chalk it up to not wanting to wait for their top-10 ranked system, maybe top-5, to bear fruits. They just decided they'd scrap their plan of acquiring struggling younger and cheaper players with upside, (Rasmus, Morrow, Escobar), and went for older, more expensive ones with downsides, for some reason.
If they had been so bad at evaluating young players over the 1st 2 years of the Ninja's reign, their system wouldn't have risen to the level it did.