The meta fallacy on display here is the Fallacy Fallacy.
For every logical fallacy, there is a fallacious application of it to a given example of rhetoric. You've committed the Argument from Authority Fallacy Fallacy: citing people who believe to have worthwhile opinions, and including their accomplishments, is not argument from authority. Argument from authority is claiming someone is correct based on their authority. Which isn't what GP was doing.
For every logical fallacy, there is a fallacious application of it to a given example of rhetoric. You've committed the Argument from Authority Fallacy Fallacy: citing people who believe to have worthwhile opinions, and including their accomplishments, is not argument from authority. Argument from authority is claiming someone is correct based on their authority. Which isn't what GP was doing.