This is surely the right step to do for them.
For Emil, and many other people using the full prototype and scriptaculous: How big is all of that together? I thought we're talking somthing like 60k for prototype alone. Since when is filesize and dependencies of a webpage not an issue any more?
Just because I have broadband doesn't mean that I'm happy to wait the same time per page that I did back in 2002 with ISDN.
Of course, it's cached and all, but if I find something that's 20k instead, that does all I need... that's probably the smarter choice, or am I wrong here? I guess I could answer my question myself by pointing out the "it does all I need". So what can scriptaculous do, that the moo.tools can't?