Even if this assumption was 100% true, it still makes sense to trust Russian communists to do their part and practice revolutionary defeatism, while we practice revolutionary defeatism here. We can't stop Russian reactionaries from the west, and Russians can't stop western reactionaries by themselves either; so the only thing you can do is not support western reactionaries. It's not that hard.
Edit: just to clarify I don't actually think Russians should practice revolutionary defeatism because the nature of the SMO is not imperialist, but I'm just saying that even if you supposed that it was, the action that western leftists ought to take remains the same.
Even if this assumption was 100% true, it still makes sense to trust Russian communists to do their part and practice revolutionary defeatism, while we practice revolutionary defeatism here. We can't stop Russian reactionaries from the west, and Russians can't stop western reactionaries by themselves either; so the only thing you can do is not support western reactionaries. It's not that hard.
Edit: just to clarify I don't actually think Russians should practice revolutionary defeatism because the nature of the SMO is not imperialist, but I'm just saying that even if you supposed that it was, the action that western leftists ought to take remains the same.