As to the article itself, I'm not sure it spells out the problem very well, or much of a problem:
"For myself and others, the PDGA guidelines fail to adequately define who can and should play in a given division and often leaves some divisions full of competitors and others nearly, if not completely, empty. Playing against a mere handful (or fewer) competitors over the course of a season removes the competitive aspect of tournament play. As an athlete, I've always been drawn to large, competitive, efficiently-run events in a variety of sports. Realigning and simplifying the amateur divisions would greatly improve the tournament experience for players and tournament directors and yield larger fields."
I think the PDGA guidelines define divisions, and where people can play, very well. The divisions have ratings caps or minimum ages that are pretty clear.
The problem of divisions being nearly or completely empty isn't solved by eliminating them (by making fewer divisions), thus making them permanently empty.
It's also dubious that the larger divisions would "improve the tournament experience for players", since the players we're talking about usually choose those small divisions, even when they have a choice, under the current guidelines, to move into a larger division.