Complex sentence: It is highly subjective whether or not an event is considered significant enough, and ultimately each event should be discussed on its own merits, the consensus among those discussing the event is all that is necessary to decide if an event is significant enough for posting.
Split into simpler sentences: It is highly subjective whether or not an event is considered significant enough, and ultimately each event should be discussed on its own merits. The consensus among those discussing the event is all that is necessary to decide if an event is significant enough for posting.