It’s about time. I had been using alternate engines specifically for image search for this reason. Although I was grateful that Brave search made it very clear to the user that image searches were being returned from Google or Bing. If Brave hadn’t chosen to make that explicit with a popup, I may have assumed otherwise.

And it’s getting some coverage now:

https://www.pcworld.com/article/2019048/braves-search-engine-is-now-totally-independent.html