000646 – when they argue on some1 from before them, it’s because they have a precedent (or derech) that was set by SOMEONE in an earlier generation, so it is true. I won’t argue this with you, ask a Rav.
as far as minhag hamakom we seem to agree – just, as I said in a different post, this is decide as per derech hatorah by our rabbonim, not our immoral surroundings!