Yes you are correct that age is part of this. Even though you have a disorder, you are still an adult and are expected to behave like one as much as possible. Yes what’s might be understandable and tolerated at 5, 10, 15 etc isn’t tolerated in adulthood.

Now there are people who truly cannot control themselves and cannot behave in appropriate manner in any age due to severity of their disorders. These people either work in strictly supervised job environment or are on disability due to complete inability to work.

But I don’t think you are one of them. You are keeping jobs for at least some length of time, you have no cognitive limitations (I can tell with 100% certainty going by your manner of writing), you have some grasp of what’s right or wrong. I think you have at least some control over your actions.

So you need to make daily effort controlling those actions as much as possible.

Also please stop saying your age is younger because of your emotional immaturity. Yes emotional immaturity is something to discuss in therapy and something to work on but people at work don’t care about your emotional maturity. They only care about your chronological age. And it’s not 15 or 5 or 2.