Khalsa Ji,
To avoid any unpleasant issues, one should read and adhere to the rules laid out by Sri Guru Hargobind Sahib Ji. The chapter is called “Vakta Sarotal’, from SriGurpratap Suraj Granth.
Satguru Ji clearly explains the maryada for doing katha, and conversely, the maryada for those sitting in Sangat. It seems that some preachers/ kathawachiks are not reading or adhering to Gurmat.
If we all adhere to Gurmat, then this would eradicate all anti social activities, and bad behaviour...
Waheguru...