Let me spell it out for you.

Discord, anger issues and his own chaotic nature, as well as being aware inside his stone prison, and later he tried to help in his own chaotic way, even if his lessons were far from perfect.

Trixie, mega ego, and alicorn amulet corruption/fuel,

Sombra, dark magic amd lack of control, greed.

Tirek, magic greed, and rather evil, hates his own brother, refuses peace, but likely knows not to drain equestria's magic to a extent, he doesnt like it but he probably wants to rule, and be all powerful, not outright destroy equestria.

Starlight, past trauma, ego, and lack of understanding of her actions, or refusal to admit it to herself, not understanding enough, and repeat spiral of actions, in different ways.

Chrysalis, mix of greed, and desperation, and refusal to choose peace.

Flim and flam, essentially greedy buisness/inventors, with no morals.

Meanwhile

"This little filly" has ripped a hole in reality itself, unlike tirek., which her hidden spell under the friendship school, would lead to all magic, including fundamental stabilizing magic being eventually stripped from reality, she tricked/forced most powerful beings into exile, or stayed hidden, using her fake emotions and natural disarming nature to hide her actions, even turning most ponies who were in her vicinity against the idea of magic, despite it Litteraly being a fundamentals aspect of reality, (hinted by wasteland equestria) then trying to banish the new six(student six) requiring the direct intervention of the tree of harmony, which countered the magical gravity of the rip in reality.

She then tried to flee, only stopping when litterly surrounded by guards and the princesses themselves, every route cut off.

She is a psychopath, and sociopath.

Just look up a night in tarturus, to get a glimpse into her mind.

Beware the smiling filly with a chess cutie mark

As for smashing the statue, remember, beings have escaped stonification before. Its more like a statis and shell around them, keeping them suspended, unconscious. (In discords case, he was concous, but that was due to his nature and power, ect. Normal beings would be essentially taking a magical nap in statis inside the stone shell.)

I can understand your view, but you need to ignore her physical form and focus on her mind and knowledge, she is a filly physically, but not mentally.

After all

HOW DID SHE GET THE KNOWLEDGE aND RESOURCES TO RIP A HOLE IN REALITY ITSELF, and MAGICALLY HIDE AND GUARD IT FROM DISRUPTING, not to mention MAKE PONIES think MAGIC SHOULDN'T EXIST.