So much anger!
The trim in the R22 is a cyclic right trim. It produces a tension that pulls the cyclic forward, and to the right somewhat. This relieves the pilot of some fatigue when cruising.
The reason is that, when you displace the cyclic forward, lowering the nose, and causing you to accelerate, the aircraft rolls to the left.
This is because the advance angle on the R22 is some 11 degrees off 90. So for each movement forward of the cyclic, it produces a corresponding forward and left result in the disc. Hence you subsequently require right cyclic as you progress further forward.
Note that this has nothing to do with either ETL or Inflow Roll!