I doubt this analysis
The Russians have provided or offered assistance to the Kurds (or been asked for it when obamas ISIS was killing them)
https://warontherocks.com/2017/12/why-is-turkey-silent-on-russias-cooperation-with-the-syrian-kurds/
The Kurds are an important factor in future Syrian stability - Russia has been wooing them.
in fact have the Syrian Army also fighting against Turkey in Afrin
If the Syrian army is not their firm allies they are at least “ the enemies of their enemies” when it comes to Turkish occupation
The Kurds will not be “ cleansed” by anyone and “ cleansing “ them would hardly deliver stability in northern Syria
That 7th of February attack talked about in the article was Russian mercenaries attacking a Kurdish base with embedded U.S troops.