I would only disagree, Martin, because my 70+ mother has poor sight, used it, loved it, no issues except hand placement, but that comes with use.

I have had it over a year, as noted, and rarely use the keyboard, so not an issue, in fact that is where I place my thumbs, and the "Home Screen" is already larger font and bold, so no issues there.

Naturally, the original poster should get one to try with his father, individual abilities vary.