Re: "Anyone" != "Everyone"
" there is little evidence, or none, that the data retained has been or is being [[misused]"
There is plenty of evidence that this data is being misused with impunity. Vodafone + Bluecoat replay attacks. TalkTalk + Huawei surveillance + replay attacks. UK Parliament + Bluecoat.
The intrusion begins the moment a third party obtains a copy of a private/confidential message with the intention of retaining some or all of the content. Subjecting the whole population to intrusive surveillance is simply undemocratic, offensive, and illegal.