That size I would have put more on. 24' and 30' pole buildings should have a 2x12 girders both inside and outside the pole.
If it was me I would fix it, and add clips to keep the roof from being sucked off the walls.
Pole buildings rarely "fall down". And I have seen plenty of old ones that the toenailing becomes insufficient in derecho winds letting the roof/trusses depart the walls and head for the neighbors property.