So, you are in a place where you have very niche experience, and if you were laid off you would have significant work to find another job. And your manager is

So, you are in a place where you have very niche experience, and if you were laid off you would have significant work to find another job. And your manager is unable to put you in a position to succeed. So, it may be time to take a step down, or when the next set of layoffs come, you might be in a bad place when you least expect it and when jobs are the most difficult to find. This is the best time in the last 10 years that I've seen in getting new jobs.