We’ve got a sitting task to give it a bit of an update. On Qwant, aside from things which have come out of them, there isn’t really much evidence that they have an index that would justify being put as anything other than a meta on the map. In fact, if you can read French, there is a decent amount in their media which would suggest there’s not really anything of note that they’ve crawled.
A very good read on this, from someone who frequents this forum, is this:
but there is also a fair bit on their Wiki (reasonably-recently updated) which gives you more on this situation: