Why not use MakeMKV to remux it for them, from the fragile and DRM-infested Blu-ray into a sane .mkv on a USB drive that they can plug into the back of their TV: https://nitter.net/turtlekiosk/status/1709057325170905363

Just what I've always wanted, a USB drive of a pirated movie!

I agree with your premise but it feels like something is lost here.

No you give them the Blu-ray and the USB drive

Gifting only the USB drive makes more sense for a nice movie collection like in the linked Twitter thread

We do rarely. Two reasons: One, because we watch Harry Potter enough and it wasn't worth buying the set on demand, and Two, I usually cannot keep track of which service we bought a particular movie on.

I also have a Roku and a large USB thumb drive, so if I have time, I rip a movie onto the thumbdrive, thus, creating our own little on-demand service.

I certainly watch DVDs still but I even run into people my age who think that's almost a bit weird. And I have CDs but rarely play them.

This is very true. Everyone always asks me to get them Netflix vouchers and stuff like that now. I'll give them the cash and they can make their own poor decisions.