Note taking apps have been around for a long time, and now all of a sudden it's a hot new thing to add bio-directional links?
The developers talked about starting out not knowing what they would end up with but that they would know when they saw it. That process took them two years (?) of exploration and development to get to what they have now. That's worth tipping them at least a few months subscription for anyone looking for a note taking app with Roam features. Throw these guys a bone for getting us past the stagnation.
Also, anything Roam-like is still going to be half-assed. If they aren't furthering the thread, then they're just copying. If they're just copying, then they don't have the understanding of the problem that the Roam developers have. If I feel Roam brought value to the world, then I should follow those developers who delivered rather than the copy cats.
Granted, Roam didn't create the idea of of linking notes. They didn't create the idea of the bullet blocks. They did create the interface which made it all work on a screen though.