Many people, including the author, skip the more interesting point in favor of the lazy critique: WeWork is not being valued by its investors as an office rental company. It's made the case that it is a business services marketplace, selling vendors' insurance and HR and legal and servers to as large as swath of the small business sector as it can grab with its fancy offices. It wants to own the app store for enterpr…
Not sure why people are negative about the core idea of WeWork. You get free beer, free coffee, bathrooms, an office, meeting rooms, phone booths with doors that close that you can also go work in whenever you want to be isolated, you can be there 24 hours a day, you have a keycard that works at all hours, and best of all, you're surrounded by startups and companies doing the same things as you. Meaning you can chat…
This is good for people who enjoy WeWork's product, since there are (and will be more) competitors that offer a similar experience for less money.
But it's bad for WeWork's valuation - and that's the core thing being brought up. WeWork's valuation is based on the idea that they can charge a premium for their product (relative to more traditional office rentals or other coworking providers), and/or that they can sell significant ancillary services on top of the base rental fees.
I don't think either of those expectations have played out, and IMO there are lots of reasons to believe that they won't play out at all.
WeWork isn't the only one - SV is full of startups that expected to exist in a premium marketplace that isn't as sensitive to price competition, but found themselves instead running a well-executed, but extremely commoditized product.