Context: Chat Control 2.0: EU governments set to approve the end of private messaging and secure encryption
"By making a minor concession EU governments hope to find a majority next week to approve the controversial 'chat control' bill. According to the proposed child sexual abuse regulation (CSAR), providers of messengers, e-mail and chat services would be forced to automatically search all private messages and photos for suspicious content and report it to the EU. To find a majority for this unprecedented mass surveillance, the EU Council Presidency proposed Tuesday that the scanners would initially search for previously classified CSAM only, and even less reliable technology to classify unknown imagery or conversations would be reserved to a later stage. The proposed βdealβ will be discussed by ambassadors tomorrow and could be adopted by ministers next week."
To be fair, AFAIK criminals often use insecure means of communication already so my guess is that this will result in more criminals not putting in the effort to set up/use an encrypted communication network.
However this is 1. probably not something any person who made that law knew 2. a bullshit excuse anyway.