I take online tutorials the same way as anything else on the internet - with a grain of salt and a tablespoon of common sense.
There are Youtube videos on how to quilt that show the user using dull scissors to freehand cut out pieces, and then pin together with a handful of pins and then sew over them.
Just because there is a video - doesn't mean the maker is an expert.
Now, for a well known quilter to post a technique like piecing so many small parts, I would think it was about learning the process, rather than the final product.
IMHO