That's pretty sad. He came across as rather odd in his autobiography, but we wouldn't be arguing over who our most ineffective £17m attacker is without him.
This has more details about the route: https://www.eastbourneherald.co.uk/news/people/d-day-75th-anniversary-the-route-timings-and-all-you-need-to-know-about-the-historic-flight-over-eastbourne-1-8950654
If you were paying Barber's wages would you see his frequent media appearances as a worthwhile use of his time, other than building "Brand Barber"? Is there a benefit to the club in having him (or anyone else) trying to justify Hughton's sacking (yet again)?