I am not in any position to judge if these measures are knee-jerk or over the top. I do think government to not take such decisions lightly, and trust them when they do so. Why we need to be careful with this nasty virus has been demonstrated in Italy, South Korea and Iran in the earlier stages of the pandemic. It's also still happening in big parts of the US as we speak. It's not pretty and am amazed people still haven't fully appreciated the potential this has to completely overwhelm a functioning health system.
Now knowing all of that, and knowing every government has their finger on the trigger to return to more stringent rules, it's beyond me what those people are doing so far from home in the first place. Little sympathy for those affected by this entirely predictable mess.