BTMRR, Everest, the new potter coaster, California Screamin' and Mummy are examples of "Realism" artistic style. Hulk, Dueling Dragons, Manta, Mako, and all the Space Mountains are examples of "Impressionism". Realism shows you the visuals the artist wants you to see. Impressionism invokes a mental image of what the artist is trying to convey. Space Mt. is no more realistic in comparison to an actual rocket to space than Hulk is to a rampaging Hulk. But both look cool and are great attractions.
The art of coaster design is very much a legit art form in it's own right, and has it's own rules. Greatness is based in integration, kinetics, and sheer awe. I think Manta at SWO is a fantastic themed coaster and WAY better than Everest, but not as good as BTMRR. Manta nails everything it attempts to do. Great queue, the layout NAILS the underwater flight of the majestic Manta Ray, and the reveal with the splashing fly by is just cool.
Impressionism is encountered most often IRL in movie scores where they use music to invoke moods and imagery. Claude Debussy and Maurice Ravel are the two most famous Impressionists in music. Here is an example.
And in painting you have Rembrandt (Realism)
Verses Impressionism, Claude Monet