I see what you’re saying; I think it’s a terms changing thing. Equity wasn’t in my vocabulary when I first saw the original image. Equality was used by many people to mean ‘treated fairly’, and most reasonable people would have understood it to mean ‘treated fairly’ based on the individual rather than a flat ‘treated exactly the same’.

I believe the term equity started to be used more though because there were those trying to give the excuse that they were treating others ‘fairly’ - when really it was obvious the other person(s) needed more support for their needs (e.g., someone that’s pregnant/disabled needing different working standards compared to someone more able bodied).