Walmart has been employing the elderly as door greeters for decades. When I worked there (oh god) 20 years ago, I’d always hang out and bullshit with them. Some were cool AF, some were batshit crazy. Either way, it was entertaining.
Before that, I worked at a restaurant where the staff was an even split between teenage stoners and grandma-aged old ladies. Like, you couldn’t write a better odd-couple workplace comedy.
All that is to say that for my entire working life, I’ve worked with (and continue to work with) people that should have retired already.