Research Highlights: A study of over 20,000 adults found that those who followed an 8-hour time-restricted eating schedule, a type of intermittent fasting, had a 91% higher risk of death from cardiovascular disease. People with heart disease or cancer ...
You can’t generalise about conferences any more than you can generalise about individual journals, or publishers, or peer review.
Lack of peer review is not a standalone criticism. The problems with this study are obvious and you do not need to rely on an imaginary peer reviewer to point them out.