No, Hibernate Search does not work with Hibernate Reactive. The hibernate-search-mapper-orm module probably never will; if Hibernate Reactive gets supported one day, that will most likely be through a different module (hibernate-search-mapper-reactive?)
Anyway, I’m afraid that quote is still relevant:
There’s been little demand so far and there are tons of things to do, so it’s all about priorities. And also about difficulty, I guess: I suspect integrating with Hibernate Reactive would require very significant changes.
Feel free to create a feature request though, that would at least give people a way to let us know they actually need that integration.