This might be true for yourself as a technical savvy person. Camera covers are particularly important to people who are self-aware enough to realize they don't have the tech skills to keep bad actors from gaining access to their camera
As a tech-savvy person, I definitely don't have the skills to make sure of that on a laptop. I might be one brew install obscure-util-from-random-HN-comment (or npm install ...) away from inadvertently giving away all my privacy.
