Its really scary to put your stuff out there, and setting an obligation for yourself, on your own, to produce content on a schedule while you have real life to worry about is difficult.
I know that if I were producing a webcomic and I was under the impression that my community was demanding, harsh and without understanding, I'd probably not be so keen on keeping it up. Considering that the vast majority of webcomics out there are not at all lucrative, there's even less incentive to produce than the other, notable authors yall seem so peeved with.
Just please, think a second before you speak. Imagine if the webcomic in question was your work, how would you want your readers to behave? I'm not saying to avoid criticism, but if you want someone to put more comics out, how about sending them an encouraging email or something?
The fact that someone can produce free content, suffer a major personal setback, then have a thousand people slandering their name on the internet because they have to shelve their hobby is just kinda messed up.