Using a Propane Torch to Prep for New Sod?

Seems like Roundup would be much faster.

Some people use a torch to burn off the thatch of a Bermuda/Zoysia grass yard. Helps it green up faster.

My dad burned the yard every year in early spring while the grass was still dormant. Never used fertilizer, either. Only used dry molasses. Ever. My uncle had a farm and kept burlap sacks full of that in the barn and used it in a hopper and fed his soybean fields with it every year. Dad adopted it for the yard and it always looked great.