[Amelia]

If we were to follow your reasoning, wouldn't your opinion of my opinion of someone else's opinion also be off topic?

Yes, and it was.

[Sabertooth]

*If we were to follow your reasoning, wouldn't your opinion of my opinion of someone else's opinion also be off topic?

**Yes, and it was.

Nah, I disagree.

And even though I also disagree with your previous post to me, it was totally fair game.

On any given thread, posters opine about the topic. Their posts then become part of the discussion, and an aspect of the topic. Other posters may comment or gather evidence and sources to confirm or refute what's been opined; it happens all the time. Sometimes it's done to good effect, and sometimes not, but that's what keeps things interesting.

What would be the point of posting if we could never be challenged on what we post?