Moving away from the term CP isn't smart, in my opinion, and I don't believe that the move towards "CSAM" is being done to try to improve the discussion of the issue or to make communication more clear. It's not really a surprise that "progressives" have ran with the term, as they are typically at the forefront of degrading the English language for short term ideological victories. Unlike the previous label, which makes it clear it's sexual in nature, the new term is not based solely off of whether the material is sexual in nature, and can be restricted or broadened as one deems necessary during a discussion; I've seen people claim that clearly sexually exploitative creations, such as the infamous cuties, doesn't qualify as "CSAM" and I've seen people claim that drawings do qualify as CSAM based off of a nebulous "societal harm" claim. It just muddies the issue, I think, as you can claim things that are inherently sexual in nature aren't really abusive, and, thus, don't qualify as CSAM.
I highly disagree with "porn" implying consent, or the concepts of "snuff porn" and "rape porn" wouldn't exist.