I couldn't believe my eyes when I saw that netflix started sniffing the UA. You can't even play a video in SeaMonkey 2.39 without the incredibly stupid general

I couldn't believe my eyes when I saw that netflix started sniffing the UA. You can't even play a video in SeaMonkey 2.39 without the incredibly stupid general.useragent.override.netflix.com;Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:42.0) Gecko/20100101 Firefox/42.0 in about:config... what were they thinking?