David Icke might not be so cavalier about telling people to burn down cell towers if he could be sued and/or jailed after people took him up on it.
As a general principle, I think we should focus on actual consequences, not imagined, potential consequences.
This has the effect of also encouraging useful dissent. If you disagree with WHO and you turn out to be right, you can be properly credited with it. You are not automatically punished for the crime of daring to disagree with the WHO, and we all benefit from having more accurate, useful information.