If folks like Vision can't be considered sophisticated, and capable of making up their own minds about the likelihood of a financial model working, and whether they like a somewhat-self-serving ownership structure, I don't know who can.
Ultimately, I don't think it matters. Whether they meant to or not, they're running a scam.
edit: I also think my attitude is partly influenced by the fact that successful companies are often quite lucky. Why did facebook succeed when a thousand other social platforms died? Why did Youtube beat all the other video startups? Instagram ... etc. Some of those probably looked like scams that, in some path dependent way, happened to work out.
In contrast, there is no world in which WeWork would ever work as it was sold, and their failure does not open the way for somebody else to win. In theory, they weren't just going to rent desks to people; they were going to transform the very nature of work through technology and culture. In some hazy way that would allow them to gain the kind of pricing power that lets the FAANGs mint money. That didn't and couldn't happen; there's no natural monopoly to be had in offices, and their technology was nothing more than spray-on glitter.
WeWork was always, in the Frankfurt sense [1], bullshit. I don't know Masa actually fell for it or just spotted something that he could bullshit other people about. But again, I don't think it matters, especially at that scale.
Think of it as akin to a Ponzi scheme. Early Ponzi investors do fine. They get paid a real rate of return, and often can even withdraw their money. Does that make it less of a fraud? Nope. It just means the house of cards hasn't collapsed yet.