They do take it into account. Pretty sure if a forward has 20 goals in four games against them and 30 in their other 18 games the selection panel will be aware of it they don’t just look at a stats sheet at years’ end and blindly name a team
Yet how often do they place players in positions in which they do not play, simply to ensure they make the cut. I wouldn’t be so quick to assume that they any fixed checks in place.