What I find most interesting in this discussion is that it implicitly hinges on how each of us organises and browses information. For example, some people are good at recalling stuff that they have seen before, so bookmarks and search will work well for them.
At the same time, other people can handle a lot of information but only as long as it is readily present in front of them. Hide that information away and it is as if it never existed. Tools that depend on their ability to recall information will fail them. Tools that give them the ability to keep that information available and visible will make them shine.
It seems to me as if some OP/commenters fail to realise that not everyone uses browsers the same way, in turn making assumptions that things make no sense on that basis, e.g tabs as history va tabs as actively used documents, vertical tabs saving space when fullscreen-ish but not with side by side windows, or having multiple windows each with a few tabs vs a single window with hundreds, single display vs multihead, browser as quasi-OS vs browser as web browser (!) with OS as OS and native apps, laptop vs desktop, or anything in between or beyond that I could not think of right now.
Personally I'm glad Safari isn't yet another Chrome-like UI. I did not upgrade to the beta, but it seems to me the choices made would make sense for the way I use a browser on a laptop or desktop.
It just feels like another flamewar, which I can safely ignore while I continue enjoying my daily driver browser.
At the same time, other people can handle a lot of information but only as long as it is readily present in front of them. Hide that information away and it is as if it never existed. Tools that depend on their ability to recall information will fail them. Tools that give them the ability to keep that information available and visible will make them shine.