Hard agree: since there’s no anchor on the page called meta or book or whatnot, it doesn’t really make semantic sense to use # to get there, even though it is, tbf, extremely cute. I’d personally much prefer just a plain 'ol query param: https://bmndr.co/rperce?tag=book working would be amazing (or, maybe better, ?tags[]=book, to parallel how you would pass goal-creation-or-update params to the API).
(small aside, @ianminds — you can also navigate to the tag-filtered #meta version, observe nothing happen, then hard-refresh the page to get to the correct view, which is occasionally more comfortable than opening a new tab)