The Russians have a very pressing need. They are at a numeric disadvantage vs the Ukrainians and can at best hold two of the three main fronts.
Trained troops would be good, but until then Russia has to fling whatever bodies it can in hopes to slow the Ukrainian advance and buy some time to regroup.
Yep, all fed to the Ghost of Kiev, completely untrained, except I haven’t seen an instance of anyone who is notba prior service reserve sent so far. I’ve seen a guy the military fought to expel on medical grounds for years and now summoned back, just to send back home, but these stories of cannon fodder are nothing but a distraction for the Ukrainian public which went through 7 waves of mobilization.