I can only speak for myself, but for me they are devices in search of a purpose. If I'm passively browsing, my phone covers that. If I need to do active work, then I use my laptop. For me, I don't have a need for the small overlap in the Venn diagram.

I think they make great sense in the edu market and other similar scenarios.

Have you tried an M1 based Mac? That’s also a different world from an i7 powered one.

try Linux Mint with Chrome or Bravo browser on any old laptop with an SSD and it's golden!

And you failed to consider the option of linux on a laptop.