Pretty sure they get some normies that way.

There are some little plastic adhesive covers that allow you to easily slide the cover on and off the webcam. These can definitely crack the macbooks. However, tape is fine. I actually bought black masking tape for use on my computers so it's less noticeable. I also put a piece of paper over the adhesive that touches the webcam so it's extra opaque and doesn't get sticky stuff on my webcam.

I used to not care very much about covering my webcam. After seeing Zuckerberg cover his, I do it religiously. If a tech billionaire doesn't trust his very well funded IT staff to secure his laptop, then what hope do I have?