Yes, I do know about them. I helped my cousin in his journey with his Mom's Alzheimer's experience. She was at home for a while, and in day care, but eventually had to enter an assisted living facility with a memory care unit, i.e. a locked unit. He and I went together to see them, and I tried to attend as many care meetings as I could. She had to transfer twice to different facilities, so we saw many. My experience working in nursing homes (throughout childhood my mom worked in one, so I visited a lot; and I worked there, and at another, in high school and college) came in handy then. Fortunately, my aunt had Ltc insurance, so that helped tremendously. But my cousin did have to pay oop for some things, including a private caregiver during the day. Toward the end, the LTC was ending and he would've had to pay oop for everything, but she developed pneumonia and she passed literally the month before that was to happen. Maybe her gift to him.
We were fortunate to get LTC insurance at a reasonable cost some years back through my company. At the time, there was no medical info needed for employee, and as long as spouse didn't have a terminal illness, there was no medical info needed for them, either. So we go it then, fortunately, as it's no longer offered. I think I've increased coverage once, so far. The experience with my aunt made me realize how important it is should the need arise. A nice feature of our plan is that we can get some of the monies back if we don't use them.