I certainly wouldn’t buy it just for a webcam, but I already have the camera and I got the Cam Link for my son’s violin performances that moved to Zoom for a while.
Oh, also I use the ECM-B1M mic even though I use Bluetooth headphones. I realized Bluetooth headphones (at least on a Mac) drop down to super low quality when transmitting both audio and mic, so I only use them for my sound and rely on the camera mic through the Cam Link for input.