As a Skate Board Certified Legal misrepresentative, I would ask the question and challenge Reddit's reply:
Would you please define your choice of words: "suggestive" and "appears".
My Mom is almost 90 years old and, because "appears" is not clearly defined, it could be construed that she appears to be a minor. Thus, your use of the word "appears" is ambiguous. How does one define a word that is purely subjective?
If a fully clothed 7 year old girl who is standing at military attention (I'm ex-military; I can define that if you really need it) is photographed looking at the camera, is that suggestive of sexual arousal? As with the word "appears", the word "suggestive" is purely subjective and therefore, ambiguous.
You see, you can't outright challenge the oppression of MAPs. You have to go about it indirectly. Challenge, in open court, Reddit for all of its rules as being not only discriminating (don't say how), but ambiguous. Only when the media picks up on Reddit objecting to the challenge to their rules will they pounce on the "pedophile" aspect of it. Let them bring it up and they'll make your case for you.
As for me, I couldn't really give a sh-something. I've never seen Reddit, anyway. And, I don't really care much what Society thinks of me or what I do. I just make sure they can't come bite me in the astronomical anatomical posterial part-O-me.