The flat earth reference is not an RAA but it is suggesting what has been attributed to Pythagoras's conclusion the earth is round was a scientific conclusion that was ignored due to so much anecdotal views to the contrary.

It is very simply flawed to make a conclusion from personal experience, especially with this small of a sample. Opinions, anecdotal input have absolutely no connection to science or technical substantiation.

There is no reference in the service manual recommending replacement of suspension hardware. I have seen that recommendation from aftermarket vendors. But as you said it is a recommendation. That is not the same as DO NOT REUSE.

As far as some technical support to not reuse the bolts see posts 65 and 66. I have an open mind to consider any supporting scientific data you can provide. Otherwise, your rationale for using the bolts again is flawed, so it is clear, flat wrong. More of the same will not change that.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas