Forced conversion has historical precedents from Abrahamic faiths all the way to Hinduism.
If an authority arrived today and made it mandatory that you convert to a faith that has been branded the only legal religion and forbade you to continue your current religious practices and beliefs, what actions would you take? Would you abandon your current religious beliefs to remain within the confines of the law? Would you defy the authority and continue you current practices? Would you follow the only legal faith publicly but continue to practice your current faith in private? Why?
I could never trust anyone who does want to force anyone to convert to a religion.
Absolutely would not convert.
I would defy authority vehemently.
I would not follow the state mandated religion publicly and then my own in secret.
Principles are important to some people. If you cannot stand for your principles publicly, what good are they for.