Tbh.
He is right honestly.
His example of what people would do is pretty accurate if we had a parse tool.
People would demand you pull a certain amount of dps in pf.

Some people would probably kick you because they think you're not doing enough because you're not pulling what a SR group gotten.

People can do the mental gymnastics all they want on why being official will be a good thing ,but the fact is the game will be more toxic if parsing was in the game officially.

People would openly mock your dps because everybody can see it.
You can say "well they need to get good" but some people generally are trying but can't reach that expectation.

Seeing their low dps would just be demoralizing to certain people and they would probably quit or feel really bad about themselves.

I know a lot of people that try to get better but just are not able.