I agree to the gist of this article. Also saw the contrary attacks in the comments section 😃 . Most of negative comments have an issue with the use of words "Absolute No Company" which potentially shuts the door for aspiring novices who want to chase the fullstack tag in their title. While the point I see you making is :

"Atleast no company which values its databases and systems enough and where the cost of failure and cost of delays is large will hire a novice without a proven track record as a fullstack developer."

Getting a proven track record inevitably needs experience. Even having sheer Einstein level intellect cannot bring down this time gap. And less serious companies which do hire juniors devs as full-stack developers, they might have extremely simple systems / cost of failures+delays may not be too much or the junior dev is expected to focus on a limited portion of the system under the oversight of a much senior engineer. That wont be truly fullstack. Its just a title in the name.

I will be shocked if companies handling the systems of health care, aviation , nuclear reactors hire a junior developer to handle these systems end to end. It's like handing over the key of a Ferrari to a driver with a learners permit and ask him to contest in a Formula1 race!!!