Years ago, I knew a small family run donut shop. They sold a variety of donut flavors, including multiple varieties that were creme filled. (Creme donut filling tastes a bit like Twinkie filling, only less sweet/more fluffy. ) Think half creme filling with half strawberry jam, or raspberry, or lemon. Every time the owner tried a new combo, they had to make a new sign. The signs were little plastic labels that fit in front of each case of donuts.
Over time they had made up a number of these little signs, for all the 'seasonal' combos the owner had tried, but nobody had kept track. The signs were flavors like : Strawberry kreme, raspberry kream, chocolate creme, lemon creem, and blueberry kreem. They had every possible spelling of creme, except "cream!"
Turns out, that's because by law they couldn't use the cream if it doesn't contain real cream. Once learned, I can't unlearn that.
So "whip" is just another way of saying- "not actual cream." A few bites of Dole Whip is okay, but a whole one (as WDW serves them) is way too much sugar. Also, two bites in, I can always taste the lack of real cream. I am probably spoiled because I grew up with high quality, real ice cream. Once you had the real thing the fake stuff just tastes icky. Not as nasty as fake maple syrup (shudder!), but icky.
[Now fake maple syrup IS an abomination!]