Although true, you can use block and section (header) links to reference in other notes, what is missing is any metadata about that link (particularly transclusions), a title for example. When using wikilinks format, the display text does not render. Our developers are aware if this. This topic (link types) would go far in addressing this issue, but full “first class” is not an easy thing to implement for a variety of reasons.
A proposal for rendering block embeds inline - #84 by writtenfool