Numerous sources already, check out VASaviation or Mentour Pilot on youtube, it looks like they flew through a rapidly growing thunderstorm and encountered extreme icing conditions. That will rapidly destroy the aerodynamics of an aircraft, and their subsequent stall and overspeed condition is a completely plausible outcome of such a situation.

https://www.techpowerup.com/gpu-specs/rtx-a1000.c4211

Sounds like yes

Website doesn’t even work for me just typing it in now. I wonder if DNS providers are blocking it or whether their infrastructure got taken down