No, the Russians (and Ukrainians) are not stupid.
Both sides know the vulnerability of this slow jet.
They both operate it low, and far from any real air defense systems, as it would be immediately shot down (as tons were in both sides). The su-25 really is littler more than a flying coffin, these days.
I wonder if the Russian pilots of these planes typically survive the aircraft shoot down by bailing with parachute or if they are operating too low to even do that effectively. This assumes they weren’t already incapacitated by the manpad missile exploding.