This is exactly correct. I have an astigmatism which causes chromatic abberation. Specifically, the B in RGB is usually out of focus when the R is in focus, although I can actually force my eyes to focus on the B and cause the opposite to occur.

This has been exacerbated by my recent "graduation" to progressive glasses. For whatever reason these seem to cause their own chromatic abberation issues.

Dark mode actually makes the fringing a bigger problem, but I configure everything not to use blues significantly and so it overall makes things more readable for me.