OP's obvious snark aside, if you want to engage in a method to level quickly, do research on how it works before complaining about it. Current information if possible.

A quick net search or just asking people in the area would have revealed that the leveling happens in the 21-30 floor, and that you need to clear through 30 first. Grab 3 friends and do it in an afternoon, then you're set forever.

In addition, since we are YEARS past HoH's release, most people are all set for leveling and only engage in those floors.... moreover, there are other ways to level than HoH that have been released, such as Bozja.

This is like complaining why Northern Thanalan Fates aren't hopping in 2022 when reading info from like, 2014.