Let me give some more details.

To set the scene, how should we react if a drug manufacturer sold pills labeled "100 mg levodopa" even though they knew they contained only 50 mg levodopa?

I think most people would shout "Evil".

The placebo effect can increase the effectiveness of a drug or create a theraputic effect where none was due. The scale of the effect depending, in part, on the level of belief in the effectiveness of the therapy.

Now, how should we react if someone posted to this forum something which, although essentially correct, could be expected to reduce other people's belief in their therapy and, hence, its effectiveness?

John