Wait a second, doesn't the Jays FO have a secret formula that no other team has where they only target veteran, durable and healthy starting pitchers? Their starters can't get hurt!
If one or two starters do miss time, it will just be bad luck and under performance though!
On a more serious note, I think the rotation is still very strong and I give Atkins credit on that front. Luckily everyone stayed healthy and made 31+ starts. Can't assume that all will happen again next season though. Like you said, maybe Bassitt or Berrios have an injury, Kikuchi regresses a bit, or Gausman loses a tick. It could happen. 4/5ths of their rotation are 30 or above and acquired as FAs or via trade. Tough really for the Jays to lose the equivalent arms of what the Rays lost or Dodgers or Braves this season with their rotations.
That's why the Jays need to take advantage of having guys like Gausman at the top of his game and their other rotation arms healthy and productive. Every year that passes, they all get older, more innings on their arms, and who knows what the next season holds. Window keeps getting smaller and smaller.