Sure I won't disagree that those people also exist but I don't think that's who the claim is being made about. Pointing out that subpar developers exist doesn't refute that good ones exist.
The point isn’t that “subpar developers exist” but that the tool misuse far outweighs and greatly affects the correct use and even those who don’t use them. These people aren’t even “subpar developers” a lot of the time, they aren’t developers at all. But they still negatively affect and impact good developers and software in general.