The issue with the Jays is they have prioritized middle infielders who hit like middle infielders. It's hard to turn those guys into passable outfielders unless they somehow become plus CF'ers where offense isn't as important as RF/LF. On top of that the outfielders they have drafted over the past few years have not been able to hit as they climbed the ladder in the minors. I actually think it's a drafting issue in general, not just an outfielder issue. The amateur drafting since 2016 aside from hitting on Bichette and Manoah has been ass cheeks for the most part. Bichette was drafted 7 years ago. They haven't developed a homegrown drafted position player at any position even close to that level since (Kirk/Moreno were international FAs). The Cardinals drafted Jordan Walker, Masyn Winn, and Alec Burleson in a 5 round draft in 2020, as an example. The prospects are there, the Jays just don't seem to be identifying them as well as other teams, and it shows in the current state of the farm system. Even the international drafting since Moreno/Kirk has been suspect, although to be fair with international prospects you need to give more time due to how young they are.
It's actually a credit to Atkins for how good the MLB team is given the lack of real farm development over the years. He's done really well on a lot of trades and signings, to his credit.