I feel like that excuse, if true, is a cop out. We don’t need a parking lot oasis, but some shade and trees here and there wouldn’t hurt. But I do think they’re no where near done and it will look a lot nicer in the end. WDW parking & entrances could could just use more trees or shade period, I hate parking at WDW. Even Six Flags Magic Mountain added a shade structure at security check (ugly though) and Florida weather is way worse.
Plus, all 4 parks seem to all do this in their parking lot & park entrances so this theory seems a little suspicious or easily placed to save money Disney money. There’s no oasis to draw you in at the other 3 parks entrances.