Usually the best way to interpret what the Russians are saying is to not believe a word.

400 vehicles including tanks and maybe 5000 soldiers drove like 700km pretty much uninterrupted, taking control of 2 major cities on the way, including one that hosts a military command center where the chief of the armed forces that Prigozhin had a beef with was at just a couple hours before. No resistance, apart from I guess one helicopter that they shot down on the way. No matter in what kind of disarray the army is, that shouldn't happen, so the whole thing was either orchestrated or at the bare minimum Prigozhyn had allies within the army allowing them the roadtrip.

Orchestrated by whom is a good question, but can't help but wonder if this was partly or completely just a sham to identify the more mutinous parties around the country and guide them near open windows. One really worrying aspect is that Prigozhyn also got access to a nuclear weapon storage facility in Voronezh. Some genius might be thinking if it's Wagner that blows up a tactical nuke in Ukraine, no one can blame Russia for it.