Waterfox, a Firefox fork, has actually built a builtin qdblocker. (And yes, they do whitelist their search partner by default, but you can turn that off.) Apparently it’s faster than uBlock Origin, but there’s been problems on some websites, so I’ll be sticking with uBO for now.

Edit: actually, it seems the underlying functionality was built by Mozilla themselves, just not exposed in the UI yet: https://news.ycombinator.com/item?id=49309020