Sorry if a handful of ex-mormons and Christians decide to debate and discuss the merits of their doctrine upsets anyone. But if not on this forum, there are many others.
But I can not see it as having any thing to do with the gospel, as the gospel is preaching the truth rather than exposing what one perceives as untruth.
If you were discussing or debating with someone the “truth” of the “gospel” and they had claimed that they and they alone had “the fullness of the gospel” and that all others are apostate, how would you go about convincing them they are in error?
If you can’t see that discussions/debates with mormons is not like the same between other Christian faiths {trinity} then you’re already behind in the understanding. The terms and names may be the same or similar, but the meanings are completely different.