Comment by mmooss

> Basically, it makes Firefox expose the same information as the Tor browser.

Is it based on the Tor browser?

Some solutions, like Tor browser or GrapheneOS, are engineered for the purpose.

Some free online tools are an aggregation of ideas from social media and someone's personal understanding. These solutions can have limited benefits or be worse than the problem. Many settings don't work as expected, there are unintended consequences (such as making the browser more unique and easier to fingerprint), unusual combinations of settings can have unintended consequences or break things (Mozilla can't test every combination of about:config settings).