Yisochordov:
1. You are still missing the point. Nobody is trying to say that we have to do any chumros just because there are similar halachos. We are saying that the same way we understand that the purpose of halachos which affect women is not to degrade them, we understand that the purpose of chumros which affect women is not to degrade them.
2. Your examples are not even true. You could just as easily ask: If nidda was really always supposed to be concerned for zava gedolah, why didn’t the tannaim or the neviim institute it? And that is actual halacha in the gemara.
3. Users do not make the subtitles.