Agreed, if your going to challenge viewpoints do it in a constructive, inclusive and coherent fashion not in a aggressive or confrontational manner or anything that can be construed as such.
Rest assured these kind of people will very quickly try to publicise and twist any sort of challenges to their viewpoints and label people as "extremist, fundamentalist, khalistani, intolerant" . We do not need to provide any unnecessary ammunition to the press who are only too happy to demonise and misrepresent the Sikh community already.
A fully evidenced well researched cohesive response is required if any challenge is to be made.
you can read it at night but you will have to continue reading until dawn , it is the vidhi of doing chandi di vaar at that time, during the day you can stop after one recitation if you wish . This is the method told by shaheed Singhs to Baba Harnam Singh ji Rampur kede wale when he made the mistake of stopping after one recitation in the hours of darkness. it is written up in Se Kineiya
when my masi ji did it for forty days to battle against strong effects of pret on her home she was told to sit on clean white chadar after keshi ishnaan (which you would do anyhow for nitnem abiyaas).