Mr Toad is silly and insane, and that WAS the point. But it also executed the "you're playing the role of Mr Toad" concept in a way that was very clear to most people. For one thing, you're actually driving Mr Toad's car with an interactive (though uncontrollable) steering wheel prop. This alone sets it apart from Snow White's wood carved vehicles, which do not convey at all who we're supposed to be. And for another, you're careening out of control and being a menace to society. Whatever crazy things happen in the ride, it is never confusing to the rider as to why Mr Toad doesn't appear in the ride and that we are in fact supposed to be him.Nothing about Mr Toad was comprehensible. That's kind of its appeal. "Wild Ride" also suggests just that.
I get why not seeing Snow White in Snow White's Adventure was a more obvious source of disappointment...even as someone who thinks the 1971 Snow White was superbly executed for what it actually was.
I wasn't referring to disappointment with the lack of Snow White btw, but rather the confusion as to why that was and what was going on. It wasn't well conveyed and obvious to a ton of riders. A combination of her absence, lack of context clues (or even contradictory ones) as well as what was happening in the ride (especially the end, which did not have the same reaction as the ending of Mr Toad's ride) caused the intent to fly over a lot of people's heads. Even had they retained the scarier 1971 version, the ride still warranted some additions to help provide more context to guests.