This change is literally pointless. They're already disabled past a certain level. If I want a 110 twink and benefit from the speed legiondaries to farm Black Temple 5 minutes faster, I should be able to. It's OLD CONTENT
The only purpose these served was for speed farmers (which can still get by just fine) and Timewalking sets (which are very short windows of actual play time).I've already adjusted my speed farming characters to ignore Legion legendaries. But I quite enjoyed having min-maxed gear sets for each spec on my toons for Timewalking. But as usual, players have something in the game that is fun, not even remotely unbalanced, and helps us make more efficient use of our time, and the devs view it as a personal threat.