Yes. The article is satire. The shrinking tent and the young voters walking away are not.
The MAGA tent has only increased over the last 3 presidential cycles. Trump won two (really three) times.
If the age-old Deep State and the age-old left are able to fool a number of young people, then the blame goes to the those young people who fall for it.
I'm optimistic though. I only see the tent increasing as we have seen up until now.