Sweden has a complete record for what every citizen here work, their education and their gender. The data is gathered as part of tax collection and as a matter of policy they also make this information public so anyone can see what the gender distribution is for any industry or profession. 70%/30% distribution is extremely average, and the wast majority of the working population (equal amount women and men) work in such professions.
If you want the most uniquely imbalanced fields, look at the professions and industries that has over 99% of a single gender. From a few years back, that covers around 5 different professions. If the the professions from the CS field is stuck in the 1960, what should we call the psychology profession with 90% women and 10% men? Nearer the 99% bracket we have professions such as mechanics, midwifes and tile installers. If we again take a look around 90% we see professions such as veterinarians, dentists, construction worker, kindergarten teachers, secretary, truck driver, and the list just goes on and on if we were to list every profession with worse gender distribution that those from CS.
93% of the working population work in a industry that the government classified as having imbalanced gender distribution, ie professions that has above 60% of a single gender. 93% is a very huge number and without a question the norm. A fair distribution is the exception, one which hopefully will grow but where the trend has been in the opposite direction since 1960~1970 and just hopefully have now reached the peak.
The only uniqueness about CS+Mathematics as academic fields is that they have more men and women rather than the opposite.
Note also that you've unsubtly moved the goalposts. I'm comparing STEM fields, you're comparing all occupations (and: in Sweden, but that's less important to my point). I mean, whatever, make whatever argument you'd like, but modulate your stridency. With some satisfaction, I'll also observe that you're only able to marshal evidence (unsuccessfully, I think?) for _one_ level, not "so many".
Among the professions in general, you said, the difference is supposed to be stark. This is false since there is no general difference between the average profession and CS. Second thing is that we're stuck in the 1960. This is also false since all professions has on average a worse gender segregation in 2018 than in 1960, which includes the STEM fields. The third would be the conclusion that toxic culture causing segregated work environment is a tech-specific problem. Every report (including government issued ones) that I have read describe similar problems in profession with similar or greater gender imbalance than CS. The service industry especially has many horror stories being printed in news with rather regular intervals.