Or just use your much better iPhone camera via Camo (https://reincubate.com/camo/) w/ great image tuning, etc. since you always have your phone with you and isn't yet another thing to deal with.
With a dedicated webcam, it's alway set up. There's no software to start up, there's no positioning the camera every time.
I'd say that another _advantage_ (IMHO) of Camo is that I don't have my phone to use for distractions while on calls, so that's a pro in my book.