I wouldn’t presume to speak for “most active AppleScripters”. To me, the phrase is a grammatical and semantic absurdity, “fast” being an adjective in my book. The ambiguity can easily be overcome by using less ambiguous syntax:
Quickly getting something to work
Getting something to work quickly
Some people like to argue about which meaning’s more important, but of course that wastes time which could be spent on script development.
I’m primarily interested in getting things working asap. The point of automation in my life is to reduce the time needed to accomplish all the tasks on my plate. Too much time spent creating a script nullifies the time savings the script affords. Execution time is really low on my priority list and only rises for scripts that run with some regularity.