This breaks rest/crud.

It can actually improve because the semantics which currently are weird, GET is used for Search (Query), listing and also Get resources.

So what?

This is about HTTP.

And it does not break REST: None of the HTTP constructs that REST is built on change due to the introduction of QUERY.

Yes: If you're doing QUERY, you're (potentially) not doing CRUD.

But this enables a clean way to do CQRS over HTTP.

Is it not just READ? As for rest, why?

How so?