Yeah, it's honestly getting old.
I can kinda understand why people are a li'l bent about Cozy, (I kinda like her too… Though, unlike most I can accept she's evil) seeing as she's just a kid… (A psychotic, coniving, backstabbing, manipulative kid whom almost destroyed all magic, and tried to permanently imprison the Mane 6 herself, and almost turned into an eldrich abomination) But to constantly pretend she's innocent, and perfect is a downright lie.
Pretending Chrysalis is a "caring Mother" (ignoring the fact, her children were just canon fodder for her, and even baby Thorax feared her) and such is a li'l ridiculous too.
Tirek meanwhile has no real redeeming factors either, besides having a cool nose ring. If he was allowed to have his way, Equestria would be a burning wasteland.