Paradoxicality in the Constitutional right on religious freedom to the exclusivist religions to propagate freely, at the expense of other religions and religious pluralism

There is inherent anomaly in the Constitutional right on religious freedom to propagate by an exclusivist religion (e.g. Christianity and Islam) which scripturally is mandated to be accepted / practiced by everyone ultimately as the only “true” religion, at the expense of all other religions and even leading to their extinction. In other words, why should the Constitution guarantee, and even help unintentionally, by granting the legal / Constitutional right as a part of religious freedom to the Christian missionaries and Muslim fundamentalists (believing in their own religious exclusivism and dedicated to converting everyone else, thus eradicating all other faiths) to convert other people and in the process wipe out other faiths? Doesn’t the very idea of that type of religious freedom to propagate and convert others to the exclusivist religions pose a serious threat to the existence of other religions which, unlike the exclusivist religions, promote religious tolerance and pluralism and are quite accepting of other people and faiths?  Therein lies the paradox, the freedom to propagate and convert others religiously by the exclusivist religions according to the Constitution poses a threat for the pluralistic (tolerant, non-exclusivist) religions to even exist eventually.

Note, the real freedom of religion is in having the free choice to practice any religion (pray and worship to the deity of one’s own choice, in one’s own way and according to one’s own choice of the scripture) or having no religion at all and be even a true non-believer / atheist. This religious freedom certainly is threatened by the very idea and existence of exclusivist religions which require everyone ultimately to follow them as “true” religion. Thus the Constitutional right on religious freedom makes sense only having the right to pray and worship in one’s own way, to the deity of one’s own choice and according to the scripture of own choosing, or not pray and worship at all and be even a true non-believer / atheist, and nothing beyond that (such as people using religious freedom to convert others religiously, even while using the excuse as doing a service to the society / community, etc.). 

http://creative.sulekha.com/paradoxy-in-the-constitutional-right-on-religious-freedom-to-propagate-at-the-expense-of-other-religions-and-religious-pluralism_622953_blog