Yep that's how I so that, although in step 4 I don't have to click "more", I immediately have an icon with a capital A that toggles fonts at the bottom. But maybe I configured it to automatically expand something that is by default hidden behind a more button... I honestly don't remember.
(0. Install uBlock Origin)
1. Re-enable web fonts
2. In the main UO settings, check "Block remote fonts"?
3. Refresh a page
4. Click the UO icon, and then "more" until I see an icon titled "Click to no longer block remote fonts on this site"
5. Click
6. Refresh the page
Repeat 4-6 for relevant sites.
Any caveats?