The EFF's "Panopticlick" paper was published in 2010 [1], together with Firefox/Tor research that knowledge became mainstream. Therefore privacy guides don't recommend it. The Arch wiki linked above has this warning in bright red:

> "Changing the user agent without changing to a corresponding platform will make your browser nearly unique."

Sorry, I am not sure, if arguing about nuanced reality is the battleground, where I see you thriving.

[1] https://coveryourtracks.eff.org/ (browser test since 2014)