Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure.
any element at a junction of three tundra tiles is removed during the glaciation phase.
This is incorrect, and not what the rules say.
...the removal only happens if a glaciation action is played... v
This is correct. The removal of elements occurs very specifically during step 4 of a Glaciation action: no action, no removal.