I totally agree, people have even gone as far as comparing her with Griffith and Akio Ohtori as a villain like that's beyond ridiculous. If you bring up how the other Diamonds were literally 3 space Hitlers who abused Pink, they will say "oh but they changed and she deserved it" but if you bring up how Pink had to learn how to grow up into a gentle young lady and fight for what's right to keep life forms safe and preserved without any role models to help her as Rose, they will say "those are just excuses for a pure evil hell spawn manipulating everyone to think that way". 

The way how she gets so mischaracterized into a 1 dimensional black and white villain is insane ike it's made pretty clear that even though gems don't age the same ways as humans, Pink Diamond was pretty much the gem equivalent of a child in most of the scenes she's in just like with Peridot, Spinel and Amethyst's original form. If anything, she was a child from an abusive household who had escaped to learn how to grow up without anyone to help her. She rebelled as Rose because the other Diamonds never took her seriously and it made her believe that her death would resolve the gem war. She was fascinated by all different lives around her (gems, humans, animals, etc) and wanted Pearl to have free will and be her own separate individual. Everything on Earth was peaceful when the war ended without any signs of the other Diamonds invading, the time warp was broken so there was no way for Rose to save Spinel and Volleyball and the corrupted gems from the cluster were only able to be healed by the powers of all 4 Diamonds unfortunately. At first Rose was superficial to Greg until he started laughing and crying, she then began to understand him they both related to each other and decided to have Steven. She just wanted Steven to live as a normal human being but never got the chance to raise him after sacrificing her own life for him to live. The only thing she could've done differently was probably not keep Bismuth bubbled but that's it