Have you been able to get GFV the first week in December - even in a one bedroom. Or a room at GCV seven months out when you want it? BWV standard view one bedrooms over Food and Wine? VAKL Concierge rooms? If you are never going to want these things - you have a better crystal ball than most people who want what they want when they want it. Forty years is a long time for ownership. Disney availability patterns will change, as will what you want.
The problem is that no one knows what they want twenty years from now. Maybe you will at that point only want studios. Or need two bedrooms. And if you aren't happy with your home resort, you'll be unsatisfied with the product. Its my opinion, and its just an opinion, that you plan for the worst and hope for the best. Planning for the worst isn't assuming that you will always want one bedrooms and that they will always be available.
A somewhat valid point but I would argue against some of it. I think the person you were responding to was pointing out, quite correctly, that there is not much of a problem getting 1 beds. Many posts extolling lack of availability and buy where you want to stay, are from people who only ever book studios.
As to your questions above, you have picked the hardest to get rooms, which could only possibly be obtained by an owner at that resort- so to lump all of those examples together as an argument (in a way, I know what you are saying) in response to sleep around points is a bit of a misnomer because any owner anywhere would have to buy at every resort you mention to guarantee those rooms. I agree if you must have one of those examples, buy there, no question.
The one bed sleep around person probably likes SSR and doesnt mind staying there- that has to be borne in mind. But they really do not have to. For example, I often read how difficult Beach Club is to get. It simply is not in 1 beds, even often in very busy times. It was wide open every time I looked for Xmas. Boardwalk- I have had standard view, but pool / garden is easy. AKV value, I have been able to get in the past no problem. All animal kingdom no issue.
The 1 bed sleep arounder doesnt mind if the most in demand view cannot be got, because they bought cheaper points and went into it with eyes wide open usually. Yes BLT on NYE may be nice, but for what I paid for my points- Boulder Ridge, Beach Club, Boardwalk etc will do (I actually got BLT this year BTW but it's hard to get at NY). Heck SSR will be fine. And if I switch to studios, I will take what i can get and stay at SSR, or I will simply sell the contract. OK I may not get Beach Club at the peak week in Food and Wine, I will book Poly instead. No biggie. VGF I have never had a problem getting but the points are a little too high for my taste. I will let you know how I get on at VGC for summer but I guarantee I have much more of a chance than the person who bought enough points for a studio where they thought they wanted to stay.
"The problem is that no one knows what they want twenty years from now. Maybe you will at that point only want studios."
I do know I want more studios in 20 years as it will be me and my wife. I know then I would rather be at Disney Springs area for shopping and eating and I may not even have park tickets. I may enjoy overnight trips to Vero etc. This is when I am planning to come a month in winter when retired so I will need cheap points (SSR standard) and will take an odd night here and there. So I at least have thought what I want in 20 years and my SSR sleep arounds fit perfectly- good availability now and I stay all over no problem, with my long term plan as stated.