Your first link talks about a specific derogation approved by the EU parliament. It provides an exemption to the ePrivacy directive, which allows for (existing) searches for child sexual abuse material by major content providers to remain legal. Without this exemption these searches would apparently be in violation of the ePrivacy directive.

You can read the derogation here: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A... . There is a somewhat helpful first page that provides context.

Personally I think it is quite a reasonable derogation; the pirate party clearly disagrees.