Hapkido is organizationally much more fractured that taekwondo, which has its own issues in this area. I'd say that the biggest issue with hapkido schools being belt factories is that frequently, they aren't actual hapkido schools, but TKD schools teaching hapkido as a means of beefing up their SD image.
There are a ton of schools around here that advertise hapkido. But bery few actual hapkido schools.
As far as organizations go, I'm not personally familiar with the WHF, though you guys do have great doboks! There is Ji Han Jae's Korean Hapkikdo Association, Myung Jae Nam's International Hapkido Federation, and there's Jin Pal Hapkido. I'm a member of the WHA. I've known people from each organization who are very good and I've known a few who were not so good.
It all comes down to the school and the instructor. Organizations can really only police but so much. Even the good ones will have some lousy schools. In fact, the bigger and more international an organization is, the more likely they are to have member schools that have quality issues.