You need to very carefully check the details on any policy you get. My dad had it, but it literally only covered less than a full year of care. I think his payout was about $50K total. He would have been better off investing that money over the years he paid it.
Most are not worth it. I really doubt in years to come unless they cure dementia, anyone will be able to get significant long term care insurance.
My dad's nursing home costs $9100 a month. Yeah.