S3 was the real fall of SVTFOE, they have so many plot keys, more or less good character, hidden lore related to Eclipsa and the other queens, but they just made a mess with it.
What was all about dark a light magic linked to emotions in S2? What about the mysterious runes in the princess school? The secrets untold by some queens, or even more deep into the battle with the septarians? All to the trash because "muh racism", it was an important part in the monster side, but it was colateral damage from the battle between mewmans and monsters, not half of the plot. The other half of the plot is the romance, but it's cancer without the "cuckstar".