I think the thing is: Some DMs (myself included) don't want to always have to be the "heavy" and tell players "No, you can't do that". Not to mention - not every "exploit" is clear as to if it is even an exploit, or how the spell is supposed to work (RAI). So we DO need some explanations. Personally, I would rather that the spell text was as short as reasonably possible, but then followed by "notes". Personally, I'd be happy for these notes to be as behind-the-curtains frank design notes, but they could be Crawford-style wordy rulings if WotC prefers. That way, we could have the official short versions appear on Character Sheets, Monster Stablocks, and Magic Items, and you'd only have to look them up when there's a conflict (or for your own mental-notes on how it works).