The project page makes claims that it doesn't fall into common ORM traps such as recreating SQL syntax
I don't see anywhere on the page where it is critical of recreating SQL syntax. I think the trap the SQL stuff is trying to avoid is doing everything through OOP method calls — something like Django's filter method, which the page explicitly calls out.
Even if it was critical of recreating SQL, the point of an s-expression syntax is that it is still SQL, rather than a naïve reinvention that ends up missing important features.