Oh, sure, mess up their logistics network enough and they'll have trouble keeping their front resupplied. I don't see evidence that it's happening yet, but sure, saturate important targets with enough bombs and it will eventually, hopefully Ukraine finds a way to do just that. I'm sure it's at least helping, even what they've managed to do so far. It might be a big part of why Russia's having trouble putting together major offensives.

I'm not disputing that there are ways to win a war other than killing all the other dudes, I'm just pointing out that if Ukraine got backed into a corner, the smart money very early on was it'd happen either because "allies all pack their bags and go home" or "they run short of manpower".