Re:YouTube change served lower-quality video to Firefox 43 f...
by Survey_Sez on Sunday January 10, 2016 @08:29PM
(#10878240)
There is in fact already an extension which will randomly change the browser user agent.
As far as I am aware, no extension currently offers the option of a random user agent, but many (including the one linked) allows user supplied use agents, and there is no reason you could not make one support random user agents.