Mine is empty as well. I think this article is misleading. The takout list does not come from gmail, but are "purchases made directly within Google Search, Maps, or Assistant".

I do wish gmail would keep track of all my purchases. Keeping a folder named "shopping" is ok, but it could be so much more.

Next to each purchase I'd love to see: - link to a manual, youtube videos about this product. - remainders when stock is low (for things I might reorder).