Agreed. I've probably never used Google Password Manager, but made the mistake of saving passwords once or twice on throwaway machines. And I was easily able to figure out how to delete them. Also I don't know which part of the security model was unclear. There's still a master password, like 1Password does. If anything, it has another layer of protection that comes from Google account and its 2FA.
The author's domain seemed familiar, and I noticed a previously popular post which had sort of similar tone, so I think there might be a pattern of writing catchy posts like these. https://fasterthanli.me/articles/i-want-off-mr-golangs-wild-...