This is incorrect, and a common misconception. BBPV is indeed a disorder caused by otoconia displacement but that displacement won't be commonly caused by a spinning manouvre, but usually by sharp accelerated unidirectional head movements, or changes in the endolymph. Completely unrelated to what we experience after spinning lets say on a merry-go-round.

Animal vision relies on the image on the retina being somewhat stable. Similarly to how a head of a chicken is stablised by neck muscles to prevent "retinal slip" human vision relies on Vestibulo-ocular reflex (VOR). Generally speaking oculomotor muscles adjust for movements of the head to stabilise the image by rapidly shifting the eye it in the other direction. Spining movement is a special situation in which (A) - VOR is continuuos and unidirectional and (B) - unable to fully compensate for movement. That causes a level of overcompensation persisting after the movement ends, causing nystagmus, and producing motion sickness symptoms.

EDIT: I don't want to sound hostile but it feels like the response you provided was written by a bot.