Just my opinion, but I think that folks realised it was not much use for initial design, but could work reasonably well for documentation of existing systems.

Documenting existing system dependencies using the product which which I'm a founder:

https://schematix.com/video/depmap

Like UML deployment diagrams, but our models are interactive and can be queried.

We also have a large customer doing DDD modeling and then generating code directly from the models they build.

Yeah, it started to work for documentation when they invented that thing that prevents you from having to constantly maintain super complex diagrams in order to keep them in sync with the actual product.