This seems to be the general consensus.

In reality Siptah was doomed to mediocrity from its inception. Exiled Lands has over half a decade of development. Siptah has about 9-12 months, and maybe 18 tops. There’s just no way Siptah can compete with Exiled Lands because of that.

One might say they could just continue to support it with new content. But its a $19.99 DLC. It has two building sets and 3 armor sets. Compared to a ‘lite’ DLC That means the map itself is only worth a few dollars itself. It cannot sustain itself. They have also taken a hard stance of not wanting to spend anymore gameplay development on content that is behind a paywall. Its officially a small diversion and designed accordingly.