And I'd find anyone that wrote "VSRE" to be very disrespectful. And since I'm a bit hot headed I'd probably write a big long response, just out of spite. :-)
My understanding was that the whole point of VSRE is to be respectful of your time. The idea is simply to let you know that there's no need to write them a long reply if you don't have the time. You're still welcome to do so if you wish. How is that disrespectful?
Perhaps the acronym should've been something like VSRA (Accepted), or SROK (Short Reply OK) instead.