And my Dad's friends take great pride in the deliberately simple feature phones with as few features as possible.
Smart phone ownership for 60+s is about half what it is for 18 - 36 year olds and I'd wager that engagement levels are proportionately lower too.
I'm not saying no older users will go for this but I think the core users will be younger and will be far, far more likely to be under the 18 - 35 bracket than over (that group being willing to tinker and price sensitive therefore more likely to use Android phones and see the appeal of a $35 device).
Being 60 doesn't mean you don't get excited about technology anymore. But it does mean that you have more time to play with it ;)