I've been working on this for nearly 5 years, and despite not being very popular yet, the technology seems pretty sticky for those that have adopted it.
But there's gaps in the standards, and we need way more tooling for more ecosystems. But when it works, it works great.
And OpenAPI/Swagger also filled some of the space.
Imagine if tools like Postman/Paw/browser-devtools supported HATEOAS.