It's neither. He's simply illustrating the undeniable point that there are huge, huge sums of money floating around in football, so if the FA is reduced to selling the national stadium for relative peanuts, they're not doing their key job properly: that is, to make football an asset for the people of this country.
You make out that Neville's point is worthless if it doesn't contain the specific, concrete solutions to the problem. But that's obviously nonsense: currently, the plan is to sell the stadium. He is convincingly making the argument that this would be a mistake. If he and others making the same argument change the FA's mind, then that is job done. It will then be up to them, the governing body, to come up with the specific, concrete solutions. Unless you're suggesting that it's a good idea to outsource that job to Gary Neville, Sky pundit?