Again, as long as you have adequate tarp coverage the main danger is getting water run-off from the tree which runs to the tree straps. It’s bad for you, your hammock, and your gear! How to avoid it? See here:
Our host, as you saw, use cinch buckles as a water break. He also uses simple hammock drip lines and says it has done a great job of keeping him dry!
Keeping dry is the least we can do for ourselves when camping or bugging out. It’s little tips like this that will do the job and make us a little more comfortable while visiting or living in the wilderness!