Yes I think they should remain as a guest convenience. It. makes for a healthier environment for guest and cast, so it would seem the small cost would be worthwhile. But then every penny counts for TWDC.I agree, the hand sanitizer dispensers were a nice touch. I know of a few smaller parks that had these even before the pandemic. It was a nice touch that was customer focused. This is purely a cost savings thing.
And yes, I wash my hands as often as possible, but it was always nice getting a quick squirt while exiting an attraction. Who knows what kind of bacterial filth is all over the lap bars, Toy Story Midway/Buzz Lightyear guns, etc.