The pi-zero(w), even at the $3 price point is the wrong tool for the job you envision.
I can't speak for bmarkus, but I totally understand why these things are left to the user to install manually for the zero and keeps with the TC tradition of only including just what you need - the rest is up to you.
In this case, the zero is targeted primarily at makers / tinkerers / education on how to interface with robotics, controllers and such. In many cases, they don't actually *need* ethernet, wifi, or bluetooth. And if they did, putting those needed files in manually is a non-problem.
I'd say that even at a 30-cent pricepoint, the zero is still the wrong tool for multimedia, unless it is just for a one-off goof. Don't get me wrong - I'm stoked at how well picore works as a general purpose desktop with Dillo browser, Aterm with terminus fonts etc, but multimedia or heavy duty websites - yeah, no.
If you are going to do that, pick up the latest if you want to stick to a PI: the Model 3B +. Nice little improvement over the recent 3B. Mine is coming tomorrow, but looks like I'll have to wait a while for the upstream firmware to make it down to a possible new release of PiCore.