Says the site with ~20-30 crapware JS trackers (12 blocked by uBlock, 23 by uMatrix). I'm not forgiving FB here, just pointing out that others are often similarly bad.

This is the reason I've stopped surfing the web and stay on news aggregate sites. It's madness how many dependencies sites have. Having Little Snitch on and not allowing general port 80/443 will make you perfectly aware.

Why don't you use a blocker extension?

I trust ublock well enough, but it's a risk - Adblock Plus on the one hand basically started collecting advertising data and selling whitelisting to advertisers, and plugins generally have an evergreen auto-updating system. It's happened hundreds of times that a plugin was bought and malicious tracking, ad-injecting and/or cryptocurrency mining code was injected without the user being made aware or the party responsible for delivering updates (Google, Mozilla) taking action against these practices or at the very least warning their users.

TL;DR: Blocker extensions are easy but they can be compromised.