I'm saying there's a very non-trivial difference between something that expands the scope of an entire game (expansion) and something like special weapons or ships or item packs that give a player advantage over those who don't buy them, that are only available via purchase as a microtransaction (pay to win DLC). Star Trek Online is a good example of the latter - some of the fanciest ships in the game are only available through their store.
Ok. So by your reasoning, when buying Horizons (expansion, right?) say for planetary gameplay, players are automatically agreeing to grind Engineers for special weapons in order to be able to compete in direct PvP. Right? Not trying to be snarky, seriously trying to see your point of view.