Budget bills in particular can get really tedious. And any bill that, say, strikes or adds a word to already extant law, would require reading the entirety of the law so changed.
Forcing them the discomfort of having to read it out loud all by themselves should help greatly with that.
I’m looking at you former speaker of the house that said we have to pass the bill to know what’s in it.
-- Antoine de Saint-Exupéry
For instance, if the law was "No driving over 70mph on I-75", shortening the law to "No driving" isn't an improvement. And even if we maintain the detail and shorten to "No 70+mph driving @ I-75" it doesn't improve things.
Concise is good. shortness for shortness sake is not. We don't need to be playing code golf with laws.