Sound like just a complainer from someone without information.
You could ask some people around here who know the info from Interview first.

Patch 2.2 = Atma step 1 & 2
Patch 2.25 = Atma step 3. (They will not make it easy, just more step on it.)
Patch 2.3 = Atma step 4. (final step). (CT will give lv 100 gear, but your old work were not wasted, because they won't give 110 gear, which still the strongest.)
Patch 2.4 = This may or may not happen, depend on how they could implement expansion on time or not. Because one year anniversary is the plan for 3.0. (And yes, in 3.0 your hardwork in 2.2 may sound like a waste, but that is 6 months away)

The gear level is plan for a soft reset every "6 month". so if you think that 6 month is not worth effort then don't bother it. But I believe many people think 6 month is fair.