Well said.
It’s common in Indo-Pak masajids (barelvi) to recite salam before azaan, there’s no hiding that fact. Reciting salam in itself is not a bad practice but to have to recite it at a** specifc time** like the particular group does, it’s bidah. Same issue with the “giyarwee sharif” , Shaykh Abdul-Qadir Jilani(rahm) would spit on those who have set a date to just remember HIM, calling him the greatest helper. Astaghfirulla.