We use it to automate Kiosks for auto logon type stuff using the edge browser. The driver and edge browser are version specific. We've found that if edge gets ahead of the driver, issues arise in our automations.
Its just an executable, no real install which could be problematic since its not standardized but might be ok for an App install and not a "patch" per say.
The Edge web driver is used for automated browser testing. It has a hard requirement to be the same version as Microsoft Edge that is installed. This means we need to be agile and keep it updated promptly.