I've been using the following addon to block this fingerprinting for a while now: https://addons.mozilla.org/en-US/firefox/addon/canvasblocker...
It is developed by multiloginapp.com a privacy first browser suite.
Security and privacy is just a marketing gig for Firefox in my personal opinion. Not truly reflecting the reality.
Additionally you can use ungoogled-chromium to take it to the next level.
https://github.com/Eloston/ungoogled-chromium
[1] Some chrome flags worth knowing...
--incognito
--disable-sync
--disable-reading-from-canvas
--disable-voice-input
--disable-system-timezone-automatic-detection [When VPN from different timezone]
--connectivity-check-url= [set 204 from your trusted location]
--disable-remote-fonts
--no-referrers
--disable-physical-keyboard-autocorrect
--no-pings
Plus Decentral Eyes plugin...