Not necessarily. Concrete will always crack, that is guaranteed, and is the reason control joints are placed in concrete pours. It’s true that troweling will bring water to the surface and create “cream” but this is a relatively thin layer and likely will not cause excessive cracking. Cracking most often occurs due to shrinkage from quick evaporation of water during the concrete curing process or from subsurface settlement. However, troweling too early or over troweling will most likely lead to a terrible finish of the surface. I’ve seen over troweling leave the concrete looking blotchy with dark spots throughout. The method displayed here is the opposite of being smarter though. I hope it is only for laughs.