Great Bear, making a Drush out of his words is being insincere. It is mentioned in other Sefarim that unless you know otherwise you have to accept the Mesoros from your mother.
Sam2, we don’t make up Darkei Ha’emoris. The Chida writes that only those things that Chazal mentioned are Darkei Ha’emori, since they specifically knew that they are baseless.
This is somewhat reminiscent of the Gemara about not passing under the saddle of a donkey. Does that one make so much more sense to you?