Well, the post said those analyses haven't aged well.
The post had probably never been accurate as it relates to Cinder. Cinder never was, nor ever spoke about being a revolutionary. She was out for herself and for power. Her speech at Amity was not a speech about a better world,
but about horrors of Vale, Atlas, and Mistral, i.e. designed to cause the Grimm attack. Her plan was twofold. Destroy Beacon and claim the Maiden's powers.
Volume 8 tried to make her character be more complex ("but she did haz da very cartoonishly bad childhood dho"), but it both failed at doing that and suffered that Vol 4-7 spent the entire time
reducing her character.
Regarding Raven, I don't think one of the poster's reasons for Raven hating Ozpin is correct (the weakness one), but it's overall accurate. Vol 3-5 Raven wasn't really much of a complex character, but that made her better imo.
Regarding Salem, that was never accurate until maybe Volume 8, and even then it's debatable whether she just wants to create a better world (if you believe her words, versus claims of Ozpin and Tyrian), or if her actions are specifically related to Ozpin. She doesn't really care for him and is willing to torture his hosts, but I can't really recall any fact that would make me think that post is accurate in that regard even in Vol 8. Regarding Grimm being "useful tools", she has never opined as such, though given her modifications to Grimm in, I want to say Vol 7 or 8, that is a plausible implication.
Ironically, by the time this was made, Fanon interpretations of Cinder and Salem would have been more accurate, and arguably in some respects still are.