Oh my the irony.
The answer to this one is simple. Generally speaking, Android's are built with a sex in mind. 9s and 2b were obviously built to be male and female respectively. Blade Runner's characters as well. Most androids in fiction have identifying features, like breasts, or maybe muscle mass, and mannerisms to match. Hell, Dorothy Haze from Va-11 Hall-A is a literal sex worker.
And yes, lady, there is a an apolitical stance. Not necessarily caring about surrounding politics and identifying characters by the most practical and common sense means possible. AKA, how the tagging system is already established, and if it hasn't been tagged yet, relying on the canon.