I'm not going to defend that I think attempting to replace sed/grep is a bad idea (especially not in 140 characters), but I will defend people's opinions.
Everyone has one, most of them you won't agree with. Whether they're nice or not. I'm generally not a nice person, at least online, that's my choice. That said, especially with this being the internet, you have to deal with others opinions.
While some people may go above and beyond (even myself sometimes) and actually be very mean with their opinion, that doesn't change the fact that they're entitled to it. If you don't like it, ignore it. If you can't ignore it, then you won't survive.
The fact that people somehow managed to turn this into the continuous drama debate about gender is just pathetic.