Which forecasts would you prefer they keep to themselves?
End of the day that kind of talk just damages trust in the scientific process, which has to be at an all time low with regard to epidemiology, as a result of the stream of certified lies that have been presented as public policy over the past few years. (“Masks don’t work” being the first of many)
1) Not when YOU are the person who determines if action should be taken!
2) You seem to be implying that action can be taken at 100,000 which will be effective at preventing the spread to 1,000,000 which may be true or may be false, but it's going to be far easier to stop it at 10 regardless.
Is useful as the higher bound and for judging the results of actions.
But still... I think you're too sure about people in charge following reasonable behaviours. We don't even have to go as far as the great famine. There's lots of things going wrong now where people responsible explicitly do not address the issue.
If you're confused on that point vs sinister authoritarian actions, then the risk of other people lying to you is far from your biggest problem.