The difference between Zed and _why is that _why never believed in an engineering ethos.
I wasn't happy that tryruby is so annihilated. The version they recovered still has issues. I tried using it to get my 14-year-old brother into Ruby, and there was too many bugs for him to smoothly guide through it. But at the same time, I know nothing of _why's decision to remove it, and I won't pretend like I know one so that I can bash him. If one day he returns and explains himself and I find him wanting, then I'll criticize him, but I'm not going to spew hate in his direction even if I do.
I'm simply grateful for all the things he gave the community, no strings attached. If the day he'd gone we never saw any of his work again, he'd still have made me a better person, inspired me to try things I'd never done. Beyond that he never had a responsibility to me and so I'm not angry. Hell, I'm still discovering new things of his — the music from his old band is playing through on iTunes now, and it's inspired stuff. (I could further the comparison by saying that Zed writes a lot about practicing guitar, but the music he's made is derivative; _why's music is haphazard and amateur but it evokes something. But that's not fair to Zed.)
As I said, I respect some things about Zed, and if he didn't spend his time being an arse to other people I'd respect him a lot more. But all the time he spends being negative really irks me, especially when it's targeted towards one of the most positive people in the community he left so violently.