As a general role, always be suspicious of very loud and vocal opinions about product and services. Specially for closed source products and paid services, they often invest in what is called Native Advertisement/Marketing which is basically paying people to lie and pretend it is organic content/opinion.

Second, despite the dumpsterfire that Mozilla’s leadership has been in a decade or so, it is very robust with privacy and anti fingerprint features out of the box, the containers has also stabilised and works great.