An observation on UI/UX.
Oversimplification does not equate to ease of use for some people. Take for instance the cheap Air Fryer my MIL bought. Now admittedly, she's in her '80s, but the fancy light up touch controls with presets meant she could not work out what to press to do cook what she intended. One reason was the cookbook she had (specific to air fryers) talked about setting temperatures, and while this one *can* do it, it's not obvious and the "manual" is maybe 5 pages long and written in tiny text.
Now octogenarians probably aren't the prime market segment for modern kitchen appliances, but some consideration needs to be made for older folk adopting newer tech. I guess the only advice I can offer for anyone designing this stuff is that old people tend to be set in their ways, so look to the past on how similar things worked and try to couch your documentation or UI in those terms.