Well, a good start, we are both amused.
Since FK sold the club, every subsequent owner has announced their intention to own the stadium, perfectly logical to tie club and stadium together. So, ask yourself, why has that not happened? Did they all change their mind? Or, did FK refuse to sell it to anyone connected to the club? It's one thing to offer to buy, it's quite another when the owner refuses to sell.
I don't recall the board (current) stating categorically that they would like to buy, as an option perhaps, but not an intent. This board has made it clear that they are looking to establish the club in a new stadium complex.
Granted, your scepticism is not unfounded given what FK did to the club but, that was a choice made by the owners at that time, not by some underhand dealing by FK (although he probably was beside himself with glee at the stupidity of those involved)
Reflect on this, FK bought the club to gain access to land, a lot of land. Tiger has bought the club for a lot more than a quid and financed everything since. There is no land from which to make a profit, no site awaiting development and no assets from which to profit. He has brought in some very wealthy folk from his circle of friends to assist him in what appears to be a good plan for the club. It's not a repeat of Reading FC nor is it, in anyway at all, similar to what FK achieved. (unless you consider that without OUFC there is no need for a stadium)
So, all said and done, you would prefer the current board to buy the stadium and not take us to a brand new shiny stadium with modern facilities in case they do the same as FK and sell the club for a quid and retain all the property that they have paid for anyway, is that right? Not a very good argument.