That recipe crates the conditions for Botulism which is fatal. You can’t store low acid vegetables in air tight containers without boiling them or adding an acid. https://en.m.wikipedia.org/wiki/Botulism
The fermentation converts sugars to acids. You don't add the acid to the veggies. The bacteria convert sugars into acid and lower the pH.
This is why pickles (cucumber) and sour kraut does not go bad.