IMO modern web browser internals are more complex and less fun to work on than 1991-era Unix clones.
I'm not being defensive of this project, I'm being critical of the direction web architecture is going.
>You could have said the same thing about unix-like operating systems in 1991 - yet, somebody wrote one from scratch without a full-time team
Err, at 1991 he just wrote a rudimentary OS from scratch. To make it more unix-like, stable and feature full took hundreds of people, including tens of full time company employees (IBM, RedHat, etc).
I'm not trying to put this little project here down, far from it. I think it's pretty neat. I can imagine even neater (if that's a word) things, though... :-)