I for one specifically remember seeing that post and having my ears perk up a bit. I contemplated commenting on it as it seemed so random and out of the blue, but ultimately ended up not... not necessarily because I thought it was a breadcrumb... I tend to not look for those sort of things as town (as mafia certainly I do)... but because I didn't really think it signified anything but a read that he had.
I don't know what that means if anything. But one thing to note is that if hydrad is town, I think scum!WW is slightly less likely to just put out a townread on someone like that.
One thing to look at is if there was maybe a post that came before that that WW might have seen and forced a townread on, but that generally requires some sort of instigation, a post that hydrad made to make WW think that way... otherwise I don't see scum him putting down a townread out of the blue like that. The only argument was that he anticipated needing a breadcrumb... and well that is just illogical. Scum doesn't do that. I have never done that.