I've also seen a breakdown that suggests that Russia's artillery composition has notably changed as the war's progressed, as well. Their ammo stocks for their longer range tube artillery have likely been significantly depleted, for example, which has led to much more Russian emphasis on shorter range and less accurate mortar artillery, because they have significantly more ammo for those available. That, of course, has its visible consequences.
It's worth saying that there's a difference between seeking the realistic truth for the sake of meaningful evaluations and fans cheering on their preferred team regardless. The Don quite looks like he's trying to stay along the lines of the former and not the latter. Hence, this kind of response feels a little pointless here. It would be far more appropriate when directed at that WaPo article that sure looks like it's attempting to spin very, very good projections so that they sound like they're bad (anyone want to bet against it being a pro-Putin Republican spinner that did the describing?). When it comes to responding to The Don, on the other hand...
I'd disagree, but with some qualifications. Morale, for example, obviously varies from group to group, varies over time, and is something that affects wars in a myriad of ways. Far more than just the extremes often daydreamed about and seldom seen. I'd suggest that there's a bunch of evidence of poor Russian morale having very real effects all along. For mines? Ukraine looks like it has already managed to pierce through what are likely the heaviest minefields of relevance. As for running out of men - yeah, it's hard to say how much they have left until they break.
Which hollows them out. They managed to take Bakhmut with human wave attacks, for example? Those kinds of losses are very unsustainable in the larger picture and may well have pretty well doomed their winter offensive otherwise. As relevant to the Southern Front, of course, if Ukraine finally breaks through, it'll likely be fairly decisive.
Entirely plausible, especially on the eastern fronts where Russian logistics aren't so strained. Even so, that's far from a certainty.
Ehh. It's more worth pointing to the more regular army members than the newer conscripts, I think, when it comes to actually effective combat forces. As for materiel, well... they've got a LOT less than they had at the start of this and Ukraine keeps getting upgrades to their materiel.