"Noscript" would be the plugin of choice, FYI. You can set granular permissions for every website, which is critical to personal peace of mind in my humble opinion.
You can also toggle JS in firefox from "about:config" and setting "javascript.enabled" to false/true. But Noscript is far more useful for setting site-specific permissions.
What are you talking about? There are cell towers everywhere. The CA senate in 2017 voted to remove local rights to govern their placement. 5G is rolling out everywhere. 5g radio transmitters on streetlights broadcasting continuously next to children's bedrooms. There was once safety concern over cell towers' placement. That is no more. We made the transmitters more powerful, but now they're smaller. So they go everywhere. "NIMBYS" have no say in what happens. It doesn't matter whether people think "cell phones give you cancer". The FCC doesn't care about anyone's safety. And people come on the internet rallying against some straw man they invented to showcase how silly it is to be concerned about the health effects of new technology.