Google flights actually has an option for Economy (exclude Basic) now. I’m not sure when this was rolled out. Previously, you could accomplish the same functionality by adding a single carryon bag in the drop down to force non-Basic.
Thanks! I didn't notice it because it's invisible when you initiate the search, you have to search first and then go back and change the cabin class. I wouldn't say this option is hidden exactly, but it certainly isn't made particularly easy for users to find.
