I am not trying to convince anyone they are making a mistake and I don't care about anyone's choice. I do think it important those asking are provided information to make an informed decision. When I learned the cost and wondered why I found information like the following two:
Proper installation and use of T-T-Y Bolts - Fel-Pro Only Torque to Yield Bolts I didn't find anything in print that it doesn't matter or it is a myth. IMO opinion it is not about proof they have failed it is about the reason they can fail. Granted MANY re-use the bolts. At one time MANY believed the Earth was flat.
It is most certainly is a debate, as both sides always 'pitch' what they do and why. What gets posted in other forums are the same debate and also anecdotal and not statistically applicable.
Reused bolts can reach the torque spec. It is not about achieving torque spec it is about the lose of clamping power and a weakened fastener. BMW uses single use fasteners in places such at when the bolt threads into aluminum. What suspension fasteners does BMW state- DO NOT RE-USE?
Those considering re-use should be provided the opportunity to make a decision based on the worth of the science rather than conjecture.
Again, I couldn't care less what anyone does but I assume at least some that are re-using the bolts have not been exposed to the technical data.