please list the C210 wing structural failures that they are aware of.
I don't think that I made a claim regarding 210s routinely losing wings ? Any aircraft will suffer damage if loads exceed the static load limits for the aircraft (ie if they are excessively overloaded). A major problem with old aircraft is whether the fatigue life has been accounted appropriately and that depends, significantly, on usage reporting.
Beech 50 twin bonanza
No experience with that particular model. However, I think that I will continue to prefer to slow down somewhat below Va min in a light aircraft if I suspect severe turbulence. One needs to be aware of what goes into the limits and then it is a case of "you pays your money and takes your chances". I am not a fan of severe turbulence and am quite happy to trade a stall for another bite of the cherry. No guarantees, of course, I might die either way.