Ran was actually the one who brought up things that way, Craig; not Rodger.
Be fair. Rodger is replying to a thread started as a counter-trinitarian challenge by another poster. (Who by the way was asked to leave for being impolite about what he was doing. Incidentally, Ran was banned for a week for his own impoliteness in this thread recently. Rodger is being far more polite so far in this thread, not counting aggravations from RanRan.)
We (among the admins) don’t have problems with such threads in principle; not least because some of the people who created this site, and some of the guest authors they invited for this site (most notably myself in this case), believe and argue that trinitarianism is not only the truth but a truth important for universalism, too. We allow modalist universalists to post in favor of modalism, per se, so far as they can see to do so, for the same reason.
But we also engage in positive apologetics for trinitarian theism on this site, not only for universalism (of various kinds), as well as opening up discussion for pros and cons on various ortho-trin positions. Our site policy is to allow other members to do the same thing for positions other than ortho-trin, or for agnosticism on the topic (if they prefer). And one of several reasons for that, is because there are in fact trinitarians who do not in fact always correctly know (or understand, even if they know) the reasons for why non-trinitarians are not trinitarians.
Heck, if it comes to that, not all trinitarians are always theologically consistent in keeping to the precepts of that doctrinal set, even when as scholars they might be expected to do so–which isn’t surprising, considering its complexity and number of details. But ortho-trin teachers are usually well aware that especially at the popular level very few people who claim to believe ortho-trin really do know the details, or believe what the doctrinal set involves, or even know much about the rationales for the doctrinal set (other than what amounts, implicitly or explicitly, to “my teacher told me it’s true”.)
So actually yes, it’s fine for someone to post comments and create threads, trying to present non-trinitarianism on this forum, and trying to clear up “misunderstandings” on the topic. Thus sayeth the site owners, the guest authors (like me), the admins (including me) and the mods (ditto).