So if he is a genuinely awful husband/person you may need to take steps towards leaving.
But (and I mean this as kindly as I can) your posts do show the impact your OCD and/or ND have on him.
‘He could see I was rewriting and deleting, if he could just do it, it would break the cycle’
You expected action because he could see you rewriting it. I have adhd and would feel completely infantilised if Dp tried to step in. You then wanted him to text YOUR friends because of adhd, which you may not have. These seem like small things, but living with someone who struggles to do something as simple as text their own friends is exhausting. The small things add up.
I saw your thread with a list of symptoms. Firstly? How many of those posters are experts and how many experts would diagnose from a simple list without actually meeting you? It could be that your on going OCD is causing the distraction and the need to be doing something new. New jobs, new hobbies, not sticking at things until you finish. You could be simply trying to outrun the anxiety your OCD is causing. I have no idea, but that’s why MN can’t diagnose with any certainty.
But, all those things you listed are exhausting. The constant job interviews and job hopping, makes life unstable. The keen interest in a hobby, the expectation. Of others to be interested for you, for you to drop it do something else to start the cycle again is exhausting. The starting one thing, never finishing and moving onto another is exhausting. For both the person doing it and the person living with them.
So whilst he should be supportive m, I think I you also have to be realistic about how much support you can expect. No one can do it all the time. Especially if they have their own mental health problems as you said he does.
It could be that he is an arse. Or it could be that you genuinely don’t believe your ways impact him and therefore ignore the impact and expect nothing but pure support.
If it’s the first, make steps to leave.