I used to get called a 10x developer, I was also called a rockstar and a ninja and a 100x dev and every other compliment that was hip. Then I hit 30. That type of talk stopped. Then I hit 40. Now I will not be considered for any entry level, mid level, or senior level software dev job anywhere in the United States, despite being very desperate and willing to relocate for anything. Doesn't matter. Too old. I'm suppose…
I have defined my advantage should be experience, wisdom and maturity. I try to deliver something to my managers that they just can't get from a developer that is very bright but has just couple of years of experience. I try to spend more and more of my time learning and deliver with less time expenditure.
Also, don't get discouraged when you don't get a job somewhere because you are an older guy. You should be thankful that you did not get the job, probably it would be a dead end anyway.
You don't need every place to accept your age. You just need one -- one where you will feel at home and be happy offering your services.