I stopped reading that argument halfway page 3 but here is an answer to you:
Definition of effect: anything applied on a model during the game which changes their attributes from what is written on their card, except for Wd loss.
This includes stuff like: modifications to stats and additional Talents from Talents and Spells, debuffs applied on the model by another model's Talent or Spell (Censure, Undead Psychosis, Hex, etc.), states of models (Defensive Stance, Falling Back, etc.) and ongoing Auras (the effect must be removed from the model the Aura originates from). Maybe some other stuff too which I don't remember at the moment. The point is that effects are temporal and change the model from what is written on their card.
Stuff that are definitely not effects are as follows (but not limited to): Wd loss, model's position on the board, Counters and Tokens (the latter get a specific mention in the spell so all is well), anything written on the model's stat card originally, attributes of terrain (you can't remove Severe or Impassable from a terrain piece), instantaneous Actions like Pulses (though if they have lasting effects those effects can be removed).
Note that in some cases an effect on a model originates from a lasting effect on another model (for example an Aura) or a piece of terrain. These can be removed from the affected model but they will be immediately reapplied by the lasting effect.
-Ropetus