Look at the old photos, numerous Rebbes and Gedolim wore neck ties so it’s just a general shlumpy dress code that people have adopted and gave it the label of frumkeit. And some have even extended this dress code to include wearing their shirts outside of their pants. So I don’t want to hear tainas about men wearing shorts and sandals for davining when your own behavior needs fixing. Kavode ha’tzibor and kavode bais ha’knesses should be as important as going to a fancy affair.
