Do you have any data to support your assertion that a "great majority"(whatever that means) of users in the present "have great difficulty handling the fact that they need to launch different apps on their computer for different purposes"?
Because it seems wildly hyperbolic. We're not in the year 1995 anymore.
PSA: there is an Android application named "Google" (sic) which is a browser, but it's not Chrome. This browser application stores every interaction (browsing history, etc) on the server-side. My mother-in-law uses it .. to buy sweaters from bloggers? She uses it for everything. And yes, she thinks the internet is just named Google. :(
Yikes, that's unfortunate. I have elderly family members with that level of technological literacy, and I've just accepted that they'll never end up on the Fediverse, or IRC (even if I point them to a webchat like Libera's in-browser Gamja and KiwiIRC clients).
Because it seems wildly hyperbolic. We're not in the year 1995 anymore.