you can read it two ways...
When I saw
"Privacy creates agency. When you can communicate privately, your potential actions grow. Someone who cannot communicate privately cannot reach out for the assistance of others."
I expected an argument showing how BAD people are given free rein to organise, to share information about how to be more Bad, and so on
then the quote
"The ACIC went on to state, “These platforms are used almost exclusively by SOC [serious and organised crime] groups and are developed specifically to obscure the identities of the involved criminal entities and enable avoidance of detection by law enforcement…"
Bad grammar. Try reading it through more squinty eyes and you get "SOC [serious and organised crime] groups use these platforms almost exclusively..."
which is (almost) clearly what they meant to say.
And my point is...
Very bit of tech we've made has a dark side. Our desire to keep our conversations private is reasonable - until BAD people also want to keep their conversations private. Citizens want to be safe from these bad people, and in the past, the GPO operator could listen in, and track down bad people and forestall bad things happening. Not so now.
And the authors assertion that law enforcement still functions is a bit laughably naive. I can sit here being a criminal mastermind, using all that free and available encryption, and the globalisation that is the internet, and the law won't ever find me. A click here, a click there, and the proceeds move between national boundaries, into and out of crypto currency and the paper trail is shredded. My location defined by IP and mac addresses is unfathomable. My lifestyle is not ostentatious.
For the benefit of GCHQ, I am NOT a mastermind, but I accept, if not welcome the idea that everything on the 'net should be transparent and available to police (and bent coppers) for the sake of cleaning up the Bad people in society and preventing them getting the oxygen of privacy. (and to stop them breeding - but that may be a bit radical until 2057)
Now, where did I leave the cat?