Starting from small crumbs doesn’t work for me as most thoughts are not crumbs but rather like Gestalts. Not that stuff is born from my mind as a fully grown and armed Athena, but notes, ideas and thoughts are mostly not a single thing but a constellation of notions, examples, existing connections and intuited connections.
In those constellations, the connections and relations are a key piece for me to express. In wiki those connections are links, but while still key, they are less tangible, not treated as actual content and not annotated. Teasing out the crumbs of such a constellation routinely constitutes a lot of overhead I feel, and to me the primary interest is in those small or big constellations, not the crumbs.
The only exception to this is having a way of visualising links between crumbs, based on how wiki pages link to each other, because such visualisations may point to novel constellations for me, emerging from the collection and jumble of stuff in the wiki. That I think is powerful.