Is it possible to drive a monitor from a hub?
Yes. Thunderbolt hub options were slim to none for a long time, I'm seeing them come to market now though. Here's an example, not an endorsement:
The problem with a Thunder bolt hub is that until USB4 the operation of a USB-C hub was not defined. Someone could make a Thunderbolt-only hub with USB-C ports but then face all kinds of support problems as people try to use them with their USB-only devices. With the USB4 spec they filled in the parts on how a USB-C hub works and so manufacturers are confident that they can produce USB compliant hubs.
The product description leaves out what kind of displays can be connected. It may require Thunderbolt displays or allow DisplayPort. If DisplayPort works then common inexpensive USB-C/DP to HDMI (or VGA, or whatever) should work also. If only Thunderbolt is allowed then HDMI (or whatever) can be used with a Thunderbolt GPU, also common but not so inexpensive.
I know this is a couple years old but I post anyway given that there's a new development.