There is an obvious difference between saying "All arguments for Christianity are flawed" or "There are no good arguments for Christianity" and saying that the phrase "Christianity's greatest thinkers" is an oxymoron (it's not, and all of Western civilization was practically developed by thinkers either Christian or sympathetic to it, with a few obvious exceptions) or that theosophers have nothing more intelligent or insightful to offer than the "most intellectually challenged back-woods hick preacher." No one can seriously think that who has taken the time to read some of the greatest and most influential thinkers in history.
He who loves God cannot endeavour that God should love him in return - Baruch Spinoza