Atkins hit absolute home runs with Belt and KK last year, so he does deserve the benefit of the doubt.
It is possible that the majority of these cheap veteran FAs will be replacement level players anyway. It's not helpful to save money if the player sucks!
What if the Jays internal projections say this:
KK, 2 WAR
IKF, 1.5 WAR
Turner, 1.7 WAR
Chapman, 2.5 WAR
Pham, 1 WAR
Rosario, 1 WAR
Urshela, 1 WAR
Grichuk, 0.5 WAR
Kike, 0.5 WAR
I mean, it's safe to assume that Toronto wanted KK, IKF, Turner because they like them more than the alternatives i.e. they project better.
Having KK+DV in the OF also provides important resiliency as the team can afford to lose a CF. It's easy to plug someone into LF, it's very hard to just find a CF on your depth chart though. A team without KK in the fold, and some platoon with Pham+ in LF, is one DV injury away from.... IKF in CF? Springer in CF? Cam Eden? Nathan Lukes?