Rather than just synthetic fur - imagine a coat (furry or not) that is "alive" and generates it's own heat to keep you warm. Maybe it "feeds" on your sweat and dead skin cells? Or you feed it at night in some manner?
Every time I see one of these articles on "bio-robotics" or whatever you want to call them, I always think back to sci-fi like Dune (Axlotl "technology") and/or Blade Runner (replicants, artificial eyes, etc); a future where the line between the artificial and the natural is very, very blurry.
Sweat happens when your body needs to remove excess heat, so using it to heat your body back (even if thermodynamics allowed for it) would be... kind of counterproductive. But being able to feed it with something overnight and have it slowly radiate out the heat would be a nice thing for winter months. Beats electric heating.
As long as this new synthetic fur is cheaper than the real thing... If I'm to believe a random outrage post I've seen on Facebook, apparently real fur is cheaper at scale than synthetic, so some companies ended up selling clothes from real fur but advertised them as synthetic, to cash in on the extra money you can get from people caring about animal suffering.
I wonder what the economic impact to local economies would be if we could be rid of the bribes, cronyism, and nepotism that goes into civil maintenance.
I know my local tire shop would be out of business. I go through an average of 1 tire each month from potholes, and a bent rim at least twice per year.