I really don't see a huge impact on the bottom of the shock that would cause it to rip off. It looks like to me that the shock malfunctioned, locked up or something that it wouldn't compress causing the shock itself to not give and rip the top and bottom mount off. It's happened with GEN2 shocks put on a GEN1's.
I personally have hit the passenger side lower shock so hard that it literally destroyed the Swarfworks shock guard but thankfully protected the expensive Fox Race Series upgraded shocks, why Fox decided to put the knob at the bottom is beyond me. This was a HARD impact and both shock mounts stayed in tact with no visual damage of cracked separation at the welds. I also have a 2020.
How the guard looks new:
View attachment 212814
What I did at TRR last month (boot did get cut):
View attachment 212815
If anyone wants a set of those guards, just ask. We sell them now being a Swarfworks dealer.