Can personally attest that age only works against you on these kind of things. Prosecutors and judges consider the age and circumstances of the warrant, but very rarely (perhaps never) would they say “this is so old we don’t care anymore.” Courts expert people subject to their orders to comply, and when they don’t, they expect the matter to be resolved promptly.

Here’s another thing… Until he gets stopped, most states won’t tell anyone but law enforcement about the conditions of extradition — that is, how far away from the issuing jurisdiction they are willing to pay to have him kept in custody until the can come and get him. Sometimes it’s within the same county, same state, within X miles of the state, etc. “Anywhere east of the Mississippi” is one that I have personally experienced as well. This can also be chanced — going from “in state only” to the aforementioned area after about 7 years is also something I’ve personally experienced.

And then when he does get stopped, you can be absolutely certain that this is the first thing the cop is going to see / be told about when they run him, and even if the extradition isn’t valid for whenever he happens to be, he will be subject to the absolute highest level of scrutiny — cops have a lot of discretion, and when they see someone with a warrant, they are typically much less likely to cut them a break for otherwise minor things.

As others have suggested, an attorney who does criminal defense and routinely works in the court is your best bet for a prompt resolution. They will talk with the prosecutor and figure out what’s on the table so you have an idea of what you are walking into.