Most male computer uses watch porn and would not want an AI to log that. Many women find porn sickening and don't understand it and will never understand male urges that result in watching it. The fact that this got into a finished product tells you a lot about Microsoft's corporate culture.
No one working there really cares about the company enough to bring up uncomfortable issues, they are all there just to get their paycheck and actual outcomes be damned. The culture their must be toxic for this product to have been put into a product enabled by default.
If this was a top-down decision and there was no input by others into it, it leads to questions over whether this feature was forced to be included by the government, which can easily require corporations to do anything and then issue gag orders and whether it was some sort of test to see how much intrusive spying bullshit that regular consumers will tolerate now. If this was a feature that was forced into the product, the plan may have been to turn it off by default after negative feedback, but then just keep it in the program for when governments want to turn it on. Governments may have realized it in any capacity such a terrible feature would result in outrage and may have thought this was the path of least resistance, like saying "Would you like to eat a bowl of shit? No, okay, we'll just give you these brussel sprouts"