You started out arguing against this premise but in your last sentence
supported it.

Yes and No. (how's that for bipolar disorder)

I saw the preceeding discussion as having two premises that were being
comingled:

(1) Pilots get to choose their level of risk while motorcycle riders do not.

(2) Motorcycle riding is more dangerous than flying due to external factors
related to other vehicles.

I disagree with 1 and support 2.