> It is only fine to cancel holochos of derech eretz
Mindful, I am with you on the main points, but maybe we should conclude the opposite – take a lesson from being respectful to medieval kitniyos and apply this attitude to middos.
Also, it is worth celebrating kitniyos – as the new agricultural method that grows beans and wheat in the same fields is responsible for northern Europe overtaking southern in population and power, and similarly of Ashkenazim over Sephardim