I think you're being a bit strong with the "So be wary of the grass, not the woods"

In the trees they drop down on you from above. Had them do that many times.

The general consensus is to wear a hat when mushrooming in the places I've been.

Ticks do not drop from trees.

Where is your proof?

They have thermal sensors on their forearms and are known to climb trees. Why wouldn't they approach from above?

Ticks climb low vegetation (not just grass) and wait for a host to pass by ("questing").

If you're going to disagree with basic textbook biology knowledge, the burden of proof is on you.