[jacques_chester]

Multisite networks are not an edge case.

It is part of the mainline code for Wordpress. It is present in the base installation.

WPEngine specifically advertise that they support it.

Also ... since when did we start considering people who expect to get what they were promised by the sales copy to be "toxic customers"?

[benatkin]

ZippyKid wins. Hosts of open source software don't have to support every feature, and the right way to omit a feature is to say that it isn't supported in the documentation.