I agree that there were likely contributing factors, but I disagree with the bolded. She had clients - that is not a job where bringing your kids to work is likely going to happen. And I don’t think that, even with non-client/customer-facing jobs would “most” companies allow kids in the office. That’s still very much the exception, not the rule.
As for the individual in the article, she sunk her own boat. I absolutely do you think that women have experienced a greater burden with childcare during the pandemic, and the fact that women are still pretty far behind men in the workplace is pretty indisputable. But this is not the case to support that argument, at all.