Yes, this is an anxious time, and yes, everyone is anxious, but it is particularly hard to be an anxious kid in an anxious time. Anxiety disorders are the most common mental health disorders in children and adolescents (and this was true before the pandemic), and they can be linked to other mental health issues, notably depression.
Anxiety can bring children into emergency rooms, and into psychiatric hospitalizations, and in a time of generally heightened stress and anxiety, parents with anxious kids find themselves worrying especially about the worriers, wondering how to talk with them about the complexities of life in 2020, and trying to assess when worry is, well, worrisome enough to need professional help.