Is there any point in installing a monitor driver?

With new monitors - no.

Old monitors didn't know how to send resolution information so not having driver meant that not all resolution and refresh combinations were available.

All new LCD screens that I saw know how to transfer this information through DCC channel and have no issues of any kind. Having monitor driver will give you no speed-up whatsoever.

Modern monitors usually only provide the color correction profile. Some however can also be configured via a USB cable instead of just via the onscreen menu.

Usually, it's not critical to install these drivers, but I'd do it anyways. It's nice when you can be sure that the colours are displayed as they are intended to be.

it depends on the monitor - any features beyond "display this image" will likely need drivers, it's possible to adjust settings on the monitor via the control panel, and that sort of thing with some monitors, others will return information (like the orientation of the monitor.