I think there are two different levels for this. First, I think that we should obey lockdown orders that are in line with many (though, as you say, not all) me

I think there are two different levels for this. First, I think that we should obey lockdown orders that are in line with many (though, as you say, not all) medical experts. Few policies are supported unanimously and, given the stakes, noting that it isn't unanimously supported seems like a very weak critique. Second, if you want to critique the policy, you should probably be providing information on how some experts disagree with this policy and why. If ever there was a time to err on the side of caution this is it, and erring on the side of caution includes being cautious with how we critique health policy. We all have the right (and obligation) to talk about what approach would be best, but in doing that we must not undermine the current, unavoidably imperfect, approach.