Hmmm...interesting. I understand from a logistical standpoint that it’s really not feasible to sanitize every time, but I feel it should at least be done more often. People touching other surfaces, their masks, not properly wearing masks, or properly hand washing after the restroom. There’s too much of an unknown variable with the general public (I’m looking at you Karen) that being über cautious isn’t a bad thing. I honestly don’t know if we will go this year and I hate that....I have faith in BGW just not gen pop.
I'll say two things on this. First of all, yes: the current BGW policy is very much operating under the presumption that guests have sanitized their hands before getting onto the ride, and again when they are getting off the ride. And there are certainly enough hand sanitizing stations in queues and outside washrooms and dining/retail locations that this is certainly probable, if of course not guaranteed. Like so much of any virus mitigation strategies in public spaces, BGW's is dependent on shared responsibility, and of course in our current climate I understand why people might be uncomfortable with that.
The second thing, though, is simpler: the reality is that surface transmission, particularly in outdoor areas, is not considered a significant source of viral infection as it relates to COVID-19. It is absolutely theoretically possible, but it requires a set of circumstances (a direct infection of droplets onto the surface, direct and near-immediate contact with that surface by one's hand, direct and near-immediate contact with one's face, in that order) that are more lab-tested conditions than real world ones, especially in an environment where there is an enforced mask policy (which severely limits the droplets an infected individual would release) and there is a clear push to sanitize.
This article in The Atlantic, "The Scourge of Hygiene Theater," is a good read for thinking about how much the focus on sanitization is much more about making us feel safe and that entities like BGW are taking this seriously than they are about addressing high-risk likelihoods. The scientists quoted all agree that it is still important to wash hands/use hand sanitizer, but they collectively agree that the initial concerns about surfaces do not reflect real world conditions, and that airborne transmission is the primary concern with COVID-19.