Abrasive comments aside, there really is a huge disparity between HW Fates and the Fates of old 2.0 areas. I believe it's one worth addressing.

When the rewards don't match the time spent doing something, no one is going to do it. Most Fates in the new areas are dead. You'll maybe see a small group tackling one or two, but the only time you'll see a decent crowd is when one of the 'super bosses' shows up that actually gives half-decent XP.

At level 59 you need just shy of 4 million experience to hit 60, so there's no reason why the XP should be so low on Fates of the same level.