UBlock Origin
NoScript
HTTPSEverywhere
edit: “isn’t this implemented in-browser?” comments: maybe, but it’s to the browser’s implementation. These plugins are reviewable separate from their analogous browser implementation.
Belt & suspenders approach. Camp on it.
Not only does it need blocking on the wheels, but that thing’s also apt to be stolen with the hitch just sitting there like that. They might consider parking a car in front of it too.