Actually, they are not "doing a thing"
If you see what they updated:
You must be registered to see the links
I highlighted the edits from their previous policy to their current as addressed in the reddit post you linked (BTW, there are probably no actual experienced attorneys in that r/LawyerTalk subreddit because their language does not signify actual legal knowledge, but rather layperson attempts at sounding like legal analysis).
View attachment 3720706
As you can see, the first edit is changing from "will only" to "may." The original sentence made it appear that Adobe would access your product, no if, ands, or buts. Even though precedence legally defines "will" as "may" (at least, in the United States) - to the layperson, this clarity in the edit is more transparent to the actual case.
In the second edit, Adobe clarifies how they may access/view/listen - again for the layperson, but also for any future claims in court. No real change. Just transparency.
The third edit lets the reader know where they can "learn more" about terms and content. Again, transparency - no change.
The fourth edit, again, offers clarity - not just through automated/machine means, but it may have a human do a manual review.
The fifth edit is a legal term clarification. "Pornography" is a nebulous legal term - an "I know it when I see it" item that is defined by the trier of fact (judge or jury) in a case, rather than a more specific, objective, tangible definition. As such, it is replaced with something more legally relevant and defined "sexual abuse material." Again, clarity and transparency.
The final edit, like the third one, lets the reader know where they can "learn more." Transparency.
Nothing actually changed in terms with what Adobe is doing from what it has been doing. It isn't "doing a thing" - but rather, continuing a thing.