Non-falsifiable orthodoxy again. If the weapons had caused tons of death then they would say that it is because they were targeting civilians and not that they were targeting critical infrastructure. Since the weapons caused little death then it is evidence of the low quality of their weapons since they were clearly trying to kill civilians more than target infrastructure.
Or maybe, they weren’t trying to genocide every Ukrainian. No, that doesn’t sound right. If we were in the same situation, we would genocide everyone, so clearly they’re incompetent and their weapons are bad. /s