@SuperDicq It alters the DOM, so it's nontrivial.

Nontrivial JavaScript is defined on this page; https://www.gnu.org/philosophy/javascript-trap.en.html

LibreJS isn't great, but isn't terrible, as it compromises partially on freedom to make some sites that are light on JavaScript for navigation frills work.

Haketileo is the ideal solution, but using it is difficult due to the poor design of browsers.