That is a general statement that does not apply here. This "solution" would have created tens of thousands of false positives, which means the victims, even if not prosecuted, would have been put on an observation list for life.
The "solution" would have been abused for other surveillance or been used as a rationale for even more surveillance.
It is a social issue that does not have technical solutions. The worst abuse cases (like the horrific Regensburg Dome boys choir case: https://www.theguardian.com/world/2017/jul/18/boys-abused-ge...) occurred before the Internet. If the EU is so interested in the issue, how about prosecuting known cases instead of a half apology. Chat Control could have done exactly nothing here.
The "solution" would have been abused for other surveillance or been used as a rationale for even more surveillance.
It is a social issue that does not have technical solutions. The worst abuse cases (like the horrific Regensburg Dome boys choir case: https://www.theguardian.com/world/2017/jul/18/boys-abused-ge...) occurred before the Internet. If the EU is so interested in the issue, how about prosecuting known cases instead of a half apology. Chat Control could have done exactly nothing here.