David is really relevant on the game audio scene because of his tutorials and geek content involving the topic.
All of his sound libraries are top notch and this one isn't different.
It's ultra specialized in whooshes and pass by sounds, which are useful for every single project a developer will encounter.
There isn't a set aesthetic theme for the library. It goes from sci-fi to fantasy, realistic to synthetic. There's anime, fire, water, electricity, horror, plain out weird. The only shared feature between each sound is that all of them whoosh. The range is really big and the sheer amount of variations for each sound is sure to give you enough to work with.
It's also really intuitive for the avarage game dev, since the variations are in separated files. This maximizes drag-and-drop use, which is probably going to be the case for most buyers here on Itch.
I'm not a big fan of the built-in spatialization that some of the sounds have, I'd rather have the sounds be on the center of the stereo field instead of passing by. I don't know how useful the baked in panning will be for the average developer getting this library, but it is a quick fix on all audio middleware and DAWs.
Going into the really geeky side here, there are some sounds where I can really hear Tonsturm Whoosh lol. This isn't a problem by any means and really no normal person will hear that, but it's difficult not to hear that signature doppler effect that Whoosh has once you've used it for years haha.
To finalize, this is a REALLY good sound library, made by a really talented and relevant sound designer. This WILL be useful for your project. Hands down. In fact it's so extensive that it might make other whoosh libraries in your collection redundant.