The game doesn't have to follow the book to the point. But these mechanics enrich the game not the opposite.
I understand the game cannot follow the tabletop exactly, but these mechanics just clutter everything up and rob other spells from shining. There are literally spells in 5e that don't really have a place in this system when every single spell creates random patches of ground (sorry, sleet storm, you gotta go). But the point of 5e combat isn't to manage random effects on the ground. That's divinity original sin 2, and we already have that game.
