I'm more or less in the same boat. I like that app a lot, I even pay for it, but I think the graph view is largely a novelty.

I very occasionally utilize the "linking" features with the [[]], but I only really do it when there's an obvious link, not because I care much about a mind map.

Though to be honest, the thing that gets 99% usage is "just a place to copy and paste stuff so I don't lose it".