We treat people differently based on their height, musculature, gender, gender performance, voice timber, weight, mobility, age, accent, clothing, ... and race. Every single person alters their interaction based on all these factors in every conversation. What we can do is recognize what our reactions are, change our habits, and try and be better models for others, especially for our children.
To pretend we can avoid seeing any of this is counter to human nature. It's a way to sweep the issue under the rug. It's taking the easy way out. It's meaningless lip service. You might think you are saying something profound or important, but what you are proposing is to continue having the problem and for us to ignore it.