Quite true. There's good, professional documentaries out there.
   But, I'd been finding myself disappointed by sources I used to
   trust completely like the BBC. They have some strong bias in
   their documentaries. Maybe they always did and I missed it but
   now, I have trouble watching one without seeing the slants. Once
   you can spot a bias, it's hard to ignore it. Kinda spoiled it
   for me which is a shame because I used to love their stuff.