So it goes.
Despite being a card-carrying cammunist, I've always tried to avoid making judgements on people's cycling skills based on video evidence. This thread is a good example why I don't think it's a good idea. The words of explanation in the OP and all the experience of riding that bit of road day-to-day just get lost beneath a few seconds of footage.
I can think of two examples from recent experience. The first is when I came close to a fight with a courier over a close pass. I got home, looked at the footage and......it was close, but I'll get maybe one of those a week and live with it without risking an appearance in court for affray.
The second example is how I deal with
this junction, crossing Pack Lane from SE to NW. If I showed footage of how I enter the ASL at the lights, but then usually pull into some neutral space and indicate to any following drivers to pass when the lights change, most people on here would think 'huh?'
(apart from col. col would get a semi).
But from experience I know that its almost impossible to control the space crossing the junction, that the ASL is on a nasty little incline that makes it difficult to clip in and go quickly, that there's a sharp pinch point on the junction exit, that the road goes to the national speed limit that tempts drivers to overtake when it's unsafe due to the way the road bends, even that there's one of those little roadside shrines to a kid who was killed on a bike a few years ago about 50 yards down the road that I can never pass without feeling sad and mortal.
All these things wouldn't come across in the footage, but no amount of criticism would make me take it any differently. Ride it and then make your judgements.