There are better systems in place pushing people into old content.

Even with a new DPS characters I was leveling recently, I've not had long waits for 2.0 or 3.0 content. No more that 20min queues tops. Fates can be soloed and honestly not many level with them anymore.

Also a lot of the community was tired of fates and old content. So SE made a change.

I enjoy Eureka. Whether it be grinding with a party or on the train. It's a unique experience for FFXIV, and I'll take it.