I'm not sure how common it is to use it as a workstation, but I've seen a lot of instances where a pi is used to power displays in business settings. Think internal things like dashboards, team/company messages, project calendars, etc. As well as external facing things such as menu boards, "Welcome" messages behind front desks, building directories, etc.

Whether a pi is the most appropriate device for that is another matter, but it seems to be a frequent enough use. And being able to power dual screens in these scenarios would be really helpful.

That said, between the marketing messaging and this[1], it seems like they really are pushing it as a potential low-powered workstation. So maybe that is something people do...

[1] https://www.raspberrypi.org/products/raspberry-pi-4-desktop-...