Calling for buffs or nerfs based solely on how an item/style performs in an “arena” style server is hasty at best.
However, I personally do find the experience there to be a useful data point in discussions about PvP meta as a whole. This is similar to an argument that we have had here on the forums before:
My greatest takeaway then was that the roll → instant full charge power shot was the big offender. Has this bug fix not made a big change in the bows damage potential? I also still maintain that knockdown might be too powerful on bows (in PvP), and that’s as someone who has only ever used bows in CE.
In regards to auto-lock and bows, it is countered by shields as you have to free aim to hit heads or feet - as shown in the video you posted. It is also pretty useless when horses are added to the mix. I think “walk-down” archery is less of a problem in non-organized PvP as it is far more gank heavy and usually lopsided in terms of numbers, at least in my experience.