Interesting. Around that time I was working at a place that was contracted to build and host binaries for zSeries/pSeries in support of IBM's Linux on the mainframe effort. We didn't actually use any of it. I think we were just there to make it look like there was 3rd party support, even though it was all funded by IBM.
1) Keep moving. Exercise and stretch. Even if it takes half an hour to get going, don't just sit in a chair all day or soon you won't be able to do anything but sit in a chair.
2) Go to the doctor regularly. Listen to them.
3) Encourage them to downsize their home and move into something wheelchair accessible or even assisted living before it becomes medically necessary. This can be really hard for some people to admit that it needs to happen, but it's A LOT harder for everyone when it's forced.
I recall a friend installing Slackware about this timeframe (1995), where you could select which packages you wanted. We missed groff. As a result we didn't have man pages, had no idea how to fix it, and ended up doing a re-install. I miss those days.
I pretty much agree with this. I'd even be honest with them up front. "Yes, I'm aware of ChatGPT, no there's not much I can do to stop you from using it, but that's not going to help you later."
(Also, you probably aren't getting paid well enough to bust your ass finding the cheaters.)
Pro tip, if you take a trip with friends and book the two adjoining family bedrooms, the door that separates them is 'locked' using what equates to a fireplace key. I keep one in my luggage so I don't have to ask the attendant to lock/unlock the door.
Wills are one step. A couple other things to consider:
1) A living will, for what to do if you're in a bad state in the hospital.
2) Adding beneficiaries to all of your financial and insurance accounts. A named beneficiary can receive payout right away and skip the whole probate law process.