its not a big deal - at first I actually thought it was a feature!! It was like "oh damn the sharing is getting crazy everything is taking strain!" lol. I think what you did here was very well put together, and in Unity too, has me wondering how it was done, so will also try to learn from your github :)
well the code is pretty messy x) but i did put a few comments for me to understand what i was doing, i hope it will help. As a first tip, the best place to start should be the scripts Tree, TreeNode and SpreadingLogic.
I also have plans to make a simple video explaining the design process and philosophy for my portfolio so I could link you that when it's ready if you want.