Thank you so much for the detailed answer! I guess the rule still applies to pre-pubescent girls and women who have hit menopause?
The difference is certainly not insignificant to me but it was more of a curiosity. It probably wouldn't have bothered me. What does bother me though is the necessity of going under the ropes at all. In fact, it is more significant than I would have thought before it happened.
I've never worried about how I get into the ring before - it's not an issue neither in Germany nor in Japan and I'm not superstitious. I once saw my coach in Japan trying to get a spectacular entrance in the ring by jumping over the ropes, and instead face-planting and injuring his shoulder (luckily he was just being honoured and not actually entering for a fight), which was a lesson to me to just enter as efficiently as possible and focus on what's actually important. I usually just go between whatever two ropes are the most conveniently located for me to go through or are held open for me. Here in Thailand I'm training at Sitmonchai, who adopt the "if you love muay Thai you enter the ring however you please" policy. The equal treatment of women in this respect was one of the reasons for me to choose to come here in the first place.
So when I had to crawl under the ropes for the fight, it was the first time I went under the ropes in my life at all. I didn't think it would be an issue, but it was. It felt off. I was at such a high point in my life, I was finally ready to go and show how much I have learned in the last month. The crowd was loving me. I held my head high. And then suddenly I had to get on my knees to crawl into the ring under the bottom rope. It was kind of like getting hit by a bucket of cold water. It took a lot away from the moment. Or, let's be honest, I let it take away from the moment. It bothered me because I let it bother me - but I don't think I can ever get to a place where I don't care. I probably couldn't train in a gym that required me to go under the ropes or not let me train in the ring at all.
It's an issue that I'm leaving to the Thai women to slowly resolve. I will definitely try to get another fight while I'm here and not let appearances and traditions get to me. But it's still an issue - just like I have trouble going to see fights at Lumpini or Raja and giving them my money. It feels wrong, given the fact that they won't even let me touch the ring. I'm absolutely with you in each single point that you make in the two blog posts that you have linked.
This whole thing reminds me of Jewish rules. Orthodox jews have similar segregation rules for men and women, with extra precautions for when a woman is menstruating. But nowadays the culture has evolved, and those who still follow these rules are viewed as relics and fanatics not only by non-jewish people but the majority of the jews as well. I hope Thailand will get there eventually.