There are contradictory answers but the community hasn't voted to close as either a truth question or primarily-opinion based. I obviously have a stake in this - thinking that Caleb's answer is incorrect, but others obviously disagree - should this question be closed or left open ?
Obviously the question has some elements of both opinion-based and truth-questions. On the other hand I don't think it carries with it most of the classic baggage of those types of questions. In spite of producing contradictory answers (of which I think the accepted one is wrong), the question has not generated a flood of answers representing assorted opinions not backed up by evidence. Likewise the answers aren't trying to argue the truth of some point of doctrine so much as trying to answer how a particular segment of Christianity views a particular issue: whether Meyer's teaching is consistent with a classical Protestant formulation.
Part of the reason I answered the question was to demonstrate how some questions that sound risky are not actually instances of question types we want to discourage. I think my answer demonstrates how the question can be approached in a way that is on topic and the voting system can do its job to produce content that makes this site useful in a way that other sites are not.
I'm even happy to see a contradictory answer posted, this is a case where a wrong answer is not a case for moderator action, it can and should be left to the community to vote based on the usefulness and accuracy of the answer content.
I think you're right that it's a Truth question, but all questions are Truth questions if you believe in the premise.
The premise of the question is that
Does she preach the basic Christian message of salvation by faith in Jesus alone, as described in John 14:6
If you don't believe that (because you're not a Protestant) then you shouldn't presume to answer that question from your POV. A Catholic would never say that John 14:6 suggests the "basic Christian message of salvation by faith in Jesus alone" because Catholics don't believe in sola-fide.
Therefore, this is not a "Truth Question" as define on the site.
Personally, I think all questions are "Truth Questions" (especially Catholic ones) and it's up to the people who want to close questions to be very careful in analyzing or answering the question to see where the question is coming from.
Basically, "sola-fide adherents" is specific enough for me.