Okay, I found the birth records for this Michel Kauffman, born 1675 in Steffisburg, Bern, Switzerland and that of Miichel Kauffman, born 1678, in Steffisburg, Bern, Switzerland.
( https://www.wikitree.com/wiki/Kauffmann-6. ) The christening records of the children of the latter ... who stayed put in Switzerland ... were easier to find than those of this Michel, who immigrated to Pennsylvania. Someone who has better access to Mennonite records may be able to find them, though.
I left the researcher's notes that said that this Michel has been disproved by DNA results because I really don't know how that works. I am waiting for the "fallout" to begin over my "cleanup" of this profile, since I am NOT an arborist. Thank you for the comments from a member of the arborist group, who encouraged me to "step forward."