The term "modern serious nutritionist" is a joke anyway: a true nutritionist is one who heals himself with a diet, and many people on keto do.
Science advances one funeral at the time.
Remember: ~150 years ago people were making fun of the guy and outsted him because he recommended that doctors should wash their hands before surgery! Now that is accepted and is known to be a prerequisite for a safe surgery.
Modern "serious nutritionist" are those kind of people: they are too arrogant and egoistic to see that thousands of people have given successful testemonies online.
Here is a list of them:
(NOTE THE PAGINATION AT THE BOTTOM OF THE PAGE: THERE ARE 86 PAGES OF TESTEMONIALS!)