Referencing a Property through a Tag doesn't work as expected

Summary: That is, if I say My Tag -> My Prop, that doesn't work even if My Tag is reified.

This has apparently always been true, and reflects the way my thinking about Tags has changed over time. Originally, Tags and Links were very different beasts, so of course you had to call _resolveTags in order to go from a Tag to a Link. But now I'm tending to think of a Tag as simply a Thing that you have named but not yet created. In that paradigm, the distinction becomes intentionally slighter -- deliberately so, since the cognitive load is lighter. And that means that dereferencing through a Tag should be considered a normal operation.