One reading of this finding is that more effort is directed toward gender performance in rich countries.
This could be due to a number of factors. I wouldn't discount the difference in the quantity of media consumed by both countries.
After years of being told that all women loved tech and only shied away from it because it was full of horrible misogynistic neckbeards, and that the only solution to the problem of fewer women in tech than men was to remove any slight negative experience they may have (note that these messages weren't all, or even mostly, coming from women!), it was strange to see so many accomplished, professional women in a culture that gave women no special treatment whatsoever.
For women every day, those negative experiences are the difference from men that keep them from being in the industry.
That's conjecture that isn't supported by any evidence. And in fact, there's considerable evidence that women don't choose STEM for far more fundamental reasons.
The very existence of the gender equality paradox, and the fact that women have achieved gender parity in fields they actually care about but which were arguably even more sexist, like medicine and law, and did it without people fawning over whether they are having "negative experiences", completely undermines your narrative.
Prostitution is not punished in Thailand and it's cheaply available. Maybe that's why males don't bother harassing women?
The evidence was in front of you here too: women broke into law and medicine which were arguably the professions with the most prestigious "boy's club" status, and they did it with little help once it was legal.
The idea that a bunch of "neckbeards" with keyboards could scare away women from STEM is bordering on the absurd.