Summarizing the whole LP is... well, it's going to be a damn long summary, let me tell you that much. :V
To just answer your question at least, Toshi is weakened. ...sorta. Kinda. Toshi has some sort of weird... age cycling thing. Presently he's an old man. Likely he's still pretty damn OP though, due to the insane number of circuits. He claimed in the RP that he was "out of magic," but considering the amount of prana I suspect he's packing? I doubt it.
As for the second part... I'm not going to get into that too much because attempts to debate this in the past have made me feel like I'm slamming my head into a wall repeatedly, and I'm supposed to be taking it easy anyway, so I'm going to skimp on the details a bit, but Toshi is portrayed in such a way that he comes off as if he's supposed to be perceived as if he's nearly perfect, even if that's not the case. The majority of his flaws are unintentional on lantz's part. ...And that's all I'm saying on the subject for now for the sake of my sanity. ^^"