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?
https://www.cdc.gov/ticks/about/index.html
https://projectlyme.org/ticks-debunking-common-myths-and-mis...
Tick behavior is well-researched and it's a basic fact that they do not climb, or jump from, trees.
They 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.