You will never get a frictionless FOSS experience. Not today, not in 100 years.
For one simple reason:
It’s not human for something to be frictionless. The reason we are used to „frictionless“ is because us using this software makes them money. Its the crazy perfectionism some of us experience when overly stressed. Its unachievable.
I use apple products and it is everything but frictionless. My sonos app is a buggy mess, the linux version works without fail. It looks worse but it functions 10 times better.
Frictionless is marketing speech, an image we reiterate to ourselves because we were manipulated into believing it. Showing you ads for new apps while you drive is another example why apple is making everything as smooth as they can. 30% of every sale goes to apple, for absolutely nothing. For the service that apt and flatpak provide and which snap tries badly to recreate.
Apple is a kiosk system, you can only change very few things. Replicating that in gnome for example isnt very hard once it is set up. Put debian stable under it and an amd gpu and your MIL has a machine that works pretty much forever.
But yes, linux is definitely not „frictionless“ and you absolutely need to throw away the tinker mindset when designing a consumer ready device. Partly because they have been shown how great autocracy works.