Oh, people are globally allowing CDNs? This has been a major thorn in my side running uBlock Origin on "medium mode" (block all third-party scripts and frames) for years now, but I figured globally allowing CDNs—or almost any sites, for that matter—was defeating the purpose of uBO medium mode, which is to protect you from unknown tracking scripts, or even worse, objectively malicious unknown scripts. (I say "unknown" as opposed to "known by way of already being on one of the many filter lists".)

I should try globally allowing the CDNs as you suggest and see how it feels. At that point, though, I wonder how much I'll be blocking that won't already be blocked via the blocking lists.

What are these recipes? Video embeds and captchas are my biggest headaches with it now.

Recipes are sets of rules needed to make a website work. If there is a recipe available for a page you are visiting you will be able to click on the puzzle icon in uMatrix and enable it.