Eh, I'll argue this isn't as true as you think. Browsers are constantly updated these days and have their own fun things that break or mess with experiences.
But that's not the biggest issue with browsers, at least on the PC, it's that the average user seems completely incapable of keeping mal/adware off their device. For those users the app world is an escape from the hell they were in.
For me as a power user apps suck. But they became popular quickly for a reason.
That link was posted two days ago, but it's not unusual news. Phone apps are not an escape from mal/adware.