Millennials are hitting 40 and they cope by calling out gen zers, as they are the first generation to get old while there is a widespread use of social media. There's not much more to it. It is also a cope by old looking gen zers like picrel, they try to push the idea that it's not their genetics but something external to them.

I literally don't know any zoomer irl who looks way older than their age. Might be different in the US because of the different food, but I don't think the food in the US has changed a lot these last 20 years.