But it does obscure the tree in that it makes spotting diseased and damaged trees harder/impossible which is a problem if the tree could come down on something/someoneā¦.
That's exactly what the nice tree surgeon said, not a problem unless it's so much ivy that the tree can't get enough light anymore.
And that it makes his job impossible as he can't see anything.
^ I've heard the same on GQT. It only kills trees that already have issues / are dying.