Instead of me taking on Emacs keys here are smarter people than me:
Joking aside, even Mosaic was champion in usability once you manage to connect to internet (which was not really its fault).
User interface was explainable in 2 seconds to everyone - you point and click.
Then surfing without surfboard was invented overnight.
-----
Some people told me I can surf internet today with EMACS (seen something but I need to find right key combination)
@ljgww_rb if so, I think it's time for some emacs tutorial or the book 😀 . some keys for starters - https://gist.github.com/robphoenix/9e4db767ab5c912fb558
about menu - https://github.com/syl20bnr/spacemacs/issues/5508
about last question - yes, i think
I'm going to watch, once again, this beautiful keynote by Avdi Grimm: