The determination of "essential" is being broad brushed to a certain extent. Not unlike businesses given that classification last spring to stay open. Limited supply will always lead to wealthy, politically connected, and highly motivated individuals cutting in the line unfortunately. A neighbor of mine in her 40s received the vaccine as a designated health care worker for fitting glasses at an eye care center. Bit of a stretch but people will take advantage of opportunities given. On the other hand worrying too much about prioritizing only those truly qualified just slows the process down.