I just tried this with the Firefox setting recommended in the article, with and without a VPN, and it still recognised me. Any other tips?

Did you restart Firefox after enabling the setting?

	▲	specproc 2 days ago \| parent [-]
		Actually, no. Good shout. AFK right now, but will try later.

nicman23 2 days ago | parent | prev | next [-]

ipv6?

jabjq 2 days ago | parent | prev [-]

Yep, doesn't work at all. This post is two years old and the methods they use have been updated.