How critical were conditions

Hello,

If republicanism was too shaky a ground upon which to construct a new nation, a stronger central government would provide the needed foundation. A few panicky citizens even talked of importing a European monarch to carry on where George III had failed.

How critical were conditions under the Confederation? Conservatives, anxious to safeguard their wealth and position, naturally exaggerated the seriousness of the nation’s plight.

The American Pageant by Thomas A. Bailey

The writer is talking about the problems with the confederation. Then he attempts to give a more objective analysis.

How can I interpret “critical” here? Does it mean sick/unhealthy?