Comment by dolorian

Better sandboxing. If one of the programs you apt-get is hacked through supply chain compromise or something, it has full access to all the goodies in your user profile. There are distros that attempt to implement sandboxing but in those distros your browser can't really be jailed properly. Qubes has tighter isolation than android does, but is slower and too much of a hassle for your typical employee or relative.

Android is pretty slick overall and the user experience is simpler and more familiar to people than Windows or Linux (even if they're an iPhone user). You'd be surprised how many people don't really use PCs.