People have demanded it. For many many years. This is nothing new. It just isn't going to happen.I agree with a lot of what you've written however keep in mind the focus of my comments is for those who do want the capability of a higher capability GPU. The people who are praising the ability of the new Mac Mini because of its ability to use external GPUs through Thunderbolt. Or praising the general expansion capability of this Mini. There's been a lot of discussion about how expandable this new Mini is (and I agree, it's very capable). But then when one considers the space that expansion consumes it kind of defeats the goal of having a small, compact computer.
Apple will never do it if their users don't demand it of them. People seem all too willing to accept a small form factor computer that requires expansion outside of the chassis. Expansion that negates any benefit to having a small form factor computer.
We praise the egpu because we know apple will never build the desktop so them embracing the egpu as they are is a big deal.
It's great because I can get a cheaper laptop with better cooling and battery life and if I want to game on it I can just use a egpu. And that same egpu can work with a any laptop, desktop, etc. with USB-C. I'd much rather have that.