> If I don’t link the note immediately it's effectively lost forever, because it's outside of the graph
This ought to be a problem for me but it just isn’t. When writing a new note I often use full-text search to see what other notes might usefully link to it. I’m aware that creating unlinked ‘orphan’ notes might be a problem so I tend to link if I can, provided it’s easy. Plus, I use TiddlyWiki, which gives me a list of orphan notes to review at will. Maybe other apps/scripts enable this too.