That... doesn't sound really convincing, TBH...He mentioned it's more of supporting the russian supply chain thus doing russian a favour, russian navy will certainly need Al-31 production line running while their AC getting repaired.
But if another J-15 needed to land on the carrier with only one working engine or worse, I think PLAN won't hesitate to call it off and switch to WS-10H.
For one - Why should China sacrifice the stability of her own fighter jet engine supply chain, just so that China could help her ally Russia - especially when domestic alternative is readily available?
Besides, if the WS-10H really is better and more reliable than the AL-31, then there is even less justification for China to sacrifice the performance of her J-15 fleet. This is especially true when considering that those J-15s are to face the full brunt of the American and Japanese naval aviation prowess in the WestPac. The PLAN definitely needs all the edge they can get over her opponents.
Moreover, Russia is currently facing an attritional war in Ukraine. It's not like they haven't lost any Flankers in the war. Why don't their Air Force order more new Flankers to replace those being lost in Ukraine, other than strengthening their fighter fleet in face of full-on NATO aggression right on her doorstep? This would also kick up the demand for more engines for those new Flankers too.
To be fair, I believe there are only 3 probable reasons for China to keep ordering AL-31s for their J-15s well into the coming years:
1. As wartime spare that would allow temporary surge in J-15 production while waiting for WS-10H production to spool up;
2. As backup spare for those J-15s already equipped with AL-31s; and/or
3. WS-10H has been proven to be consistently unreliable and/or failed to achieve the required performance parameters set by the PLAN.