I often leave comments similar to this to inform close voters that I'm working on a solution for instance. Since we are a community and are trying to work together for the common good, this makes perfect sense to me. It's not an attempt to mislead or impose an opinion.
It's simply a way to communicate with the community. I personally would hesitate to edit a post that wasn't a CW in this fashion, however I understand the motivation to attempt to offset the tendency of many to robot review without reading the comments. One of the reasons I push to have users edit information into there posts is that comments aren't always read (the other being comment deletion of course)
The question I always consider is does preserving a particular question from closing improve the site? I've lobbied to leave questions open before, with varying results. I've found a more effective use of my time is to improve what I can and accept what I can't. Everyone has opinions and it's unlikely to see things the same way as anyone else. Sometimes further explanation can be effective. Sometimes not.