The description of your riding sounds entirely sensible to me. The OP's style does not however, so I guess we'll have to disagree on the comparison. The notion of dismounting for a pothole originated with you and I picked up on it to illustrate a point. I've no idea what sort of pothole would induce someone to ride like the cyclist in the clip - a pretty scary one, I should imagine!
I'm not sure whether you disagree with the principle of widing ride in the face of strong sidewinds or you just don't find the OP's example justified. If the former, then we fundamentally disagree - if the later, I have a little more sympathy with your position. However, as I was not on the bridge at the time and the video does not allow you to judge the wind speed, I'm not really in a position to chide the OP.
The examples of dealing with a pot-hole, or a tricky right turn, or a pinch point etc were examples of where a cyclist could conceivably dismount when they felt "uncomfortable" - if we followed the line of your earlier reasoning. I suspect most people, including you, would think dismounting in these circumstances would be unnecessary, just as most people would not walk their bike over a bridge when they could ride and give themselves more lateral space on the road.
Staying safe as a cyclist more often involves reducing the aggravation caused to other road users, rather than increasing it. I do anything I can (short of putting myself in physical danger) to reduce the inconvenience to other road users caused by my presence on the road.
I should think most people would agree with that. The issue is that many cyclists will adopt different tactics to cope with road danger and, to a lesser or greater extent, this might inconvenience other road users.
For example, if you're riding along a narrow suburban lane you could ride in the gutter, a metre from the road edge or take the centre of the lane. These different positions would "inconvenience" other road users in different ways, but cyclists could justify each position according to their take on how they want to reduce the risk to themselves.
As a result, I very rarely have the sort of altercations often reported by other cyclists on forums like this one. This lack of conflict is important enough for me to be willing to add a minute or so to my journey in order to achieve it. It's second nature to me now, and hence something that I don't even have to think about.
I shouldn't give the impression I skulk around getting on and off my bike every five minutes. It's more of a subconscious mindset which minimises the potential for conflict and maximises safety.
If you can reduce conflict and ride in such a way that you feel subjectively safe, that's great, but I very rarely have altercations with drivers who feel they have been inconvenienced by me (and I don't pander to irrational or ignorant road users).
IME, a far greater threat are road users who are distracted, careless or who just don't give a crap about my safety.
