making toilets mixed sex is going to make it even easier for men to film women under/over cubicles
But Wagamama aren't introducing unisex bathrooms with cubicles and I've already expressly said that I'm not in favour of those kind of unisex bathrooms. Sole-use rooms that are completely enclosed are, in my view, different - for this very reason.
The risks to women's privacy and safety posed by unisex bathrooms/changing rooms are very real. IMHO, claiming that the same problems exist with sole-use spaces undermines those arguments and gives the impression that the GC movement is more interested in creating obstacles for trans individuals than they are in genuinely protecting women.
I've mentioned on fwr before how a man followed me in a practically empty swimming pool changing village, chose the cubicle next to mine and suspect he was attempting to film me as he pushed a pile of his clothes slowly under my cubicle.
Also iirc since Target in America made their changing rooms mixed sex they had lots of reported incidents of voyeurism.
I'm very sorry for your experience and I'm in no way in favour of shared, unisex changing areas. Frankly though both of the examples you've given make enclosed individual changing rooms seem like the better option, not worse.