So…. You didn’t read the article, and it shows. Maybe it is on to something.

For reference:

Gen Z is the first group to score lower than the generation before them. Their attention span, memory, reading and math skills, problem-solving abilities, and overall IQ are lower than those of millennials.

All of these things are quantifiable.

Did... you read the comment? They made a simple statement. They didn't go beyond that and made no other claims. You're the one assuming, here.