My first thought was that this is using an emotional subject with a secret intent of a power grab. I could be wrong but I am curious about the actual numbers around CSAM on encrypted networks, and if there's other enforcement avenues.
I'd be also curious to see the budget breakdowns for the different detect-deter-deny-disrupt activities going on, and the effectiveness of each. Like is intercepting encrypted communications addressing production and materially stopping abuse from happening, more effectively than tracing victims, social work, etc (I don't have a good sense of options available). Or is it just a low hanging fruit that catches a few criminals, but provides an important pretext for broader snooping like you say. They would have a much more compelling case (in any e event I disagree with violating innocent peoples privacy to prevent crime) if they explained why this was the best option.