Similar to Mastodon's spikes last year, it seems. Anyways, there is data to think about. Source
To be honest, it's not exactly working. When you use fingerprint randomization on Firefox, it shows that it differs, yet won't write straightforwardly that you are done with that. Instead, it says I do not have that randomization. It works only with Brave. Personally, I use Brave when Blink engine is required and Firefox as a daily driver.
Well, usually that happens when Americans come it. They freaking love to add politics to anything. Since they are mostly leftist, they bash anything they don't like out of the sake of doing so. Brave is great, I have been using its search engine from the beginning and the browser when Blink engine is enforced, and I cannot use Firefox.