A rocket that is expensive and increasingly irreplaceable used against some very replaceable infantry in a rear area, as opposed to taking out a HQ, a SAM site, a supply dump or a barracks? yeah....
Sorry, we don't live in Fallout, ordnance in production is the definition of replaceable.
No one cares about barracks, they are not the magic infantry making building C&C taught you they were, in practice in a war they are wherever soldiers live, and they are the real target, not the piece of real estate they are present in.
The costs for Russian government to pay death and injury compensation for these soldiers alone will be many times higher than the cost of the missile, nevermind their training, and combat experience paid for with blood.