The long answer is Stalin's supporters said the exact same things. And it's not a surprise -- Xi is borrowing a lot from Stalin's centralization playbook, including "restructuring" the PLA (i.e., purging generals who weren't loyal to him personally and ensuring he has a Party loyalist on every ship) and developing the rank and file (to replace the Party leaders he purged in "corruption scandals"). However, this time around, those of us outside the system smells the b.s. a mile away.
China would be wise to remember that Stalin came thisclose to losing WWII because of these changes. Purging military leaders may make them loyal to you, but it doesn't make them good at their actual jobs.