Why is the recruitment information of graphic design limited to those under 35 years old?

Apprentices in the design industry should not be over 27 years old, and management should not be over 35 years old, because the design industry and process are actually the same, and they are all very tired and work day and night, so when recruiting apprentices, they should be old and energetic. Another is that young people have new ideas, which is the most important thing in design. As for management, they should not be over 35 years old, because if they go out to look for a job at this age, their ability is very poor.