Why is it it bizarre to ask that of a:- Non holder who's...

Why is it it bizarre to ask that of a:

- Non holder who's sentiment is sell and doesn't hold.
- Who changed their display photo to a caricature of the boss from an Financial Review article that posted incorrect information requiring a correction.
- With the context of dozens of brand new Hot Copper/Twitter accounts being birthed over night, who all have a sell sentiment, and only have a small amount of posts (all concerning AVZ).
- With the context of false information coming from a rival company.
- With the context of the sharp rise of shorts.

At what point is it appropriate to infer (or at least explore the possibility) that their are posters who are spreading misinformation (not saying this poster - hence my simple question) with the goal to add to downwards pressure on the share price?