[yarddog]

I think the SU-24 is an old design and was intended more as an attack fighter bomber than an air superiority fighter.

[The Ghost of FReepers Past]

Russia didn’t know it was at war with Turkey.

[ImJustAnotherOkie]

It's capabilities are in line with the old F111 of Vietnam days. In fact it looks like a clone.

[Redbob]

Per Wiki, the SU-24 was first flown in 1966 and introduced into service in ‘74, and is primarily a bomber.

Not state-of-the-art by any means, and certainly not a fighter.
But when was the last time Russian pilots *had* to fight anyone?

Their favorite targets are guys riding mules carrying muzzle-loaders.