There's a trending article in Yahoo! News Japan about the decrease in young people going to TDR. A lot of it mirrors the discussions going on about declining attendance and price increases at the American Disney parks.
The article notes that attendance among 18-39 year olds is down nearly 10% since pre-pandemic, and that attendance of guests 40+ years old is steadily increasing.
The article attributes the change in guest demographics mostly to higher ticket prices, but also the abolishment of the annual pass system and the decrease in entertainment offerings. It also notes that OLC is making record profit amid higher guest spending, even though attendance is lower than pre-pandemic.