Despite that Allah had explained everything in His verses; can we still cooperate with Jews and Christians for the smooth sailing of daily works? Can we make partnerships with them? Is it permitted to express opinions on religious matters in a shape that they like?
You can cooperate with Jews and Christians. There is no evidence that prohibits this. When our Prophet (p.b.u.h.) came to Madina, he ruled the city with collaboration of Jews and polytheists.
Expressing opinions on religious matters for the purpose of pleasing someone, is like making the religion of God an instrument of personal desires. This type of behavior is certainly a great sin.