BeOS is easy on the user in every aspect: installation, configuration, expansion, user interface, responsiveness, you name it. Admittedly, Linux desktop distributions have made strides in the right direction, but overall, BeOS still offers the best user experience on the desktop (this is my opinion, of course).
To me, and I am sure that many average desktop OS users would agree, being able to install new drivers with ease is part of that user experience. That Linus or kernel hackers do not care about making installation of third party drivers easier may be fine for them, but it does tell how little importance they place on the user experience.
Most users are not hackers, nor do they have the skills (or want) to configure their operating system using cryptic commands from a terminal window or editing obscure text files.
I think that BeOS fans and developers in general believe that the average desktop user deserves better. Many contribute and support the OBOS project because they think that even after more than two years of Be Inc. being defunct, OpenBeOS and the other BeOS incarnations (like Zeta) still have a very good shot at serving desktop users better than other operating systems (including Linux with the 2.6 kernel), as well as evolving into the future.
I guess this is the point that I was trying to make.
Koki