These are good calculations. I think many people would like to go to a significantly larger field of view than 40 degrees. 40 degrees horizontally is not that much: the human visual field is over 200 degrees.
OLED-on-glass-substrate is allowing TVs to get lighter making them more installable. OLED-on-plastic-substrate TVs could be shipped rolled up. They may not be that far away (<10 years).
The older copy of the US site at https://web.archive.org/web/20180206011840/https://www.42.us...
is very clear:
"I AM NOT BETWEEN THE AGES OF 18 AND 30. CAN I COME TO 42?
No. While we do not have anything against those who are over 30 years old, when opening a new location, we have decided to concentrate our where they can be the most efficient and where we have a great deal of experience."
On the current site this is changed to:
"You can apply to 42 if you’re older than 45, but please know that most students here are younger and that Intensive Basic Training is tiring."
Hardly encouraging.
The french site http://www.42.fr/ says "ouverte à tous et accessible aux 18-30 ans" (18-30 only)
Draw your own conclusions about age discrimination here. You are free to apply...