Occam’s razor is for hypotheticals. You’re rejecting an actual physical demonstration, by a reader of engineering dynamics and vibration at Cambridge.

The feedback mechanism you’ve described is likely correct, and also a complete furphy, since the central nervous system is not part of the bicycle.

All of which is par for the course and rather confirms the point, viz. that people will happily hold forth on any explanation they care to latch on to, secure in the knowledge that the total absence of consensus makes it impossible to say, definitively, “that is wrong”