shmendrick – I can name many Rabbonim who disagree with Rav Falk on this issue. There is one in my kehilla who told me personally that he, and I quote, “do[es] not allow Oz VeHadar Levusha in [his] house, and if it was up to [him] [he] would not allow in it in any house” [sic.]. Just because Rav Falk is a posek, that doesn’t make him infallible – he’s not the Pope, we aren’t Catholic. And unfortunately, he doesn’t know the norms. His dislike of denim is based on how denim was perceived in 1930s. He feels that because denim was primarily worn by people who were considered lower-class in those times, it is unfitting for a Bas Melech. This is, and has been for many years, not the case but Rav Falk still holds to the belief that it is. And you say he knows the norms?
You disavow “one-size fits all”, yet that’s exactly what Oz VeHadar Levusha is.
And there is no need to do teshuva for something that is not an aveira.
In return for your free advice, may I humbly offer some of my own to you. Stop jumping on every thread trying to shove your own view down everybody else’s throats disguised as basic Yiddishkeit. Stop starting threads whose sole purpose is to push forward your latest random chumra. And listen to other people. Who knows, you may just learn something…