Over the last 13 years I've had three cars with stop start: an E92 BMW 320d, a 2016 Mini Clubman Cooper and a G31 320d with a cumulative total of just under 300k miles. Not had a single problem related to stop start in any of those cars. In fact, the only issues I ever had were some kind of ECU gremlin in the E92 towards the end of my ownership of it, and in the mini the infotainment locked up.
I saw that on FB yesterday. TBH I'm not overly concerned atm as Chery/Omoda/Jaecoo are (allegedly) in the throes of beefing up their spares logistics in the UK (in Swindon I believe). I just think in this case the timing of the accident is unfortunate.