People in the real world like to rub their parts together and don't concern themselves with these labels.
Yes these labels are meaningful and can help you define who you are and what you want but don't let them get in the way of finding someone who wants to consensually rub parts. It's really just an Internet thing and niche sex culture.
I'm nearly at 7 with my employer and I've found the situation to be quite good and I see no sign yet to jump ship. There's still good gigs out there.
I'm sure the person you are responding to had good reason to stick around 20 years. It's possible only recently did the math not work out for them.