Ammendments have been added frequently for 300 years and can and have been repealed. There is a well documented process for it.
Nobody has ever tried to repeal anything in the bill of rights - but there is no reason it couldn't be done.

You speak very authoritatively for something you clearly no absolutely nothing about.

On the contrary: the exact OPPOSITE was intended, the founding fathers thought the constitution should be a living document reflecting the will of the people in every era. Madison proposed that conventions be held EVERY TEN YEARS to amend, repeal and modify as needed to reflect the people of the day.