Same reasons they put their zodiac/astrological signs. About as scientific.
If we're being honest, then no.
uMatrix from the creator of uBlock makes JS management easy (along with other things).
Do you also consider libraries a form of protest?
I used to use RequestPolicy, but found Policeman is better.
DDG lies about not tracking you. Startpage appears not to.
Here's a recommendation: stop using FTP.