US law mandates retirement at 56 for Air Traffic Controllers due to the high stress and fast-paced multi-tasking nature of the job

It’s considered one of the most mentally challenging jobs there are.

https://www.law.cornell.edu/uscode/text/5/8335

Bytedance/TT put out a statement that this is BS

"And now, Costco is testing out a system that requires members to scan their membership cards at the store entrance — instead of just flashing the card to employees."

“The scanners also mean employees don’t need to ask customers for their membership cards at cash registers and self-checkout.”