I listed a source and you followed up with an anecdote. You should know that does not help an argument either given you are experienced.

ad hominem, is a fallacious argumentative strategy whereby genuine discussion of the topic at hand is avoided by instead attacking the character, motive, or other attribute of the person making the argument, or persons associated with the argument, rather than attacking the substance of the argument itself.

Courtesy of renowned philosophy professor.

Merriam-Webster:

1 : appealing to feelings or prejudices rather than intellect an ad hominem argument

2 : marked by or being an attack on an opponent's character rather than by an answer to the contentions made

Quite literally what you have done. Please help me to understand what you know it to be and provide whatever sources you can. Sources help to lend credibility to an argument, as you are aware.