Not usually a royal watcher but I watched this as it was on the bbc and I was surprised to feel sympathetic towards his main argument. It’s somewhat crazy that even Liz Truss gets life long security at the expense of the taxpayer, and he was born into this position rather than choosing it, and private security is no substitute if they don’t have arms or access to intelligence. He’s also right that the wider fallout if eg one of his children were to be kidnapped would be something to be seen.
Surely there must be a deal to be struck where he gets high level security provided by the state but contributes to the cost through the tax system. I’m not surprised he’s upset about it and although he was never going to win his case because of the nature of the particular decision making regime, he has put the issue in the public eye in a more effective way than he usually achieves!