Japanese Language Linguists/Folklorists: Do you think that 方言周圏論 helps to explain the historical spread of Japanese folklore, as well as local variations of related myths?

As per the title.

See [方言周圏論](https://ja.m.wikipedia.org/wiki/%E6%96%B9%E8%A8%80%E5%91%A8%E5%9C%8F%E8%AB%96) for an explanation.

Academic studies, especially those depicting related mapping, are appreciated.

Thank you!