I've changed my mind before this point but this is why I thought he was scummy:
1) His D0 pushes consisted of pushing for things he felt the safest--which changed at least twice (Poisoner/Decoy/Detective). Not necessarily scummy but this is probably the most likely position for scum to take; hence, skepticism of Zen's slot.
2) Part of his scumread came from the fact that I didn't interact with him--but his only posts attempting to do so were a post where he talked about me but never directed it at me (and got mad about the fact that I didn't respond to it) and a post where I did respond and he never continued the conversation. As a result, this point felt inaccurate and his desire for interaction felt forced or farced, either or.
3) His takes on my reads were all over the place. I heard him describe them as arrogant, wishy washy, impatient, nervous, or cautious. Those don't play nice together in my head, making me think he's not actually thinking I'm scum but moreso just throwing adjectives at my play until he finds something that sticks. This is why his wagon felt scatterbrained.
4) I felt he was trying to call me scum for scumhunting (when scumhunting was optional!)
That's probably it.
This olive branch just seems fake. First you trying to lynch me, now you're trying to work with me? I still don't buy it.