It took a few years for me to accept this, but the ongoing commitment to continuing to make available most Raspberry Pis is a pretty compelling argument for many business purposes over using a random old used PC or a more powerful SBC that may not longer be available in a year. The development of specialized OS distributions for some of these tasks only furthers the strength of the choice for going with what could be otherwise under powered hardware.
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-...