I still do have a few USB-A: Yubikey, mouse receiver, Streamdeck, USB sticks, webcam, old HDD hard drives I use for backups...

I guess I could, but I would rather not upgrade all of those to USB-C and I really tired of having to carry dongles everywhere.

I even like that if I were consistently using HDMI, I could actually just put an HDMI extension card into my laptop and still not need a dongle. It's customizable to my usage at any point in the laptop's life.