All Putin does is beneficial to he and Russia.
I believe at some level Putin likes the Kurds. They are the most honest players in this mess, not sure that is Putin’s motive for treating them well in general.
Anyone sane who observes what is happening can see that Kurds are the only force that has the slightest human concern. (yes, I know they are leftist.)
So, here we are.
The best possible solution would be an independent Kurdistan carved from Iraq, Syria and Turkey.
None of those countries will agree to it.
Iraq has allowed them autonomy to a large degree.
Assad might be forced by circumstances to make a similar deal.
Erdogan would rather just wipe out the Kurds.