Excluding motors and acceptible wear on service components. the only parts I've broken in 2 years+ of Emtb riding have been a pretty poor quality Box components Ebike specific rear mech I had been testing for review and a shimano E8000 shifter which bent and cracked after multiple crashes.
That's is around 8000 miles. Half of which would be commuting, tame trails, the other half DH/Enduro riding.
Gotta say. it's pretty reliable.
I guess with you riding DH tracks a lot you have to expect a fair amount of component damage just as you would riding DH regularly on a DH bike. I service a lot of fast local riders DH bikes and honestly, they're mostly fucked each season.
In what way did your main pivot fail?