I've seen a lot of your posts now Darkest and what I see most is avoidance and displacement, although I sympathise from a humanitarian perspective with the dilemmas both you and your husband face.
As I mentioned on a thread last week, in my view this isn't as straightforward an issue as misogyny. IME, men and women both suffer from gendered expectations of sexual impulses and behaviour.
Like others, I don't interpret that article in the way that you do, or reach the conclusions that you have. Nor do I think that seeking attachments elsewhere solve problems for individuals who crave more than orgasms.
Wondering why your husband doesn't leave your relationship is also I feel, the wrong question. It passes the responsibility over to someone else when the only behaviour you can control is your own.
As a general point, when individuals find their take on a situation increasingly out of kilter with sympathetic others, as has happened with this thread, it's a fair benchmark that your own take on life and situations might be becoming skewed and unbalanced. This is not unusual when people find themselves on the precipice of change, because procrastination being a human fault, it becomes easier to get diverted by ephemeral issues rather than devoting energies to changing one's life.
I sense this is what might be happening to you right now and so I'd gently counsel you to think about doing some concrete things to change your life and move away from the procrastinating diversions that might be hijacking your resolve to make changes. I think if this goes on, you might find yourself becoming angrier and angrier, seeing motives connected to your personal situation that possibly aren't there and positioning yourself as a victim and not an active participant in your own destiny.
I've thought long and hard about making these comments and only hope you receive them as intended, because they come from a well-intentioned place and are only one person's observations.