“obligatory minahim can spring up from the people”
Precisely. And they should be kept unless there is good reason not to keep them. Including kitniyot, bicycles and umbrellas. Just don’t pretend that this is something that it isn’t.
” Mr. Weiss just ignores halacha”
He is *Rabbi* Weiss.
And the person who ignores halachah is you. (Motzi shem ra.) Even Rabbi Steven Pruzansky, a huge opponent of Rabbi Weiss, agreed that Rabbi Weiss is a fully observant Jew.