Even the “sweet” tomatoes have pretty close to the same pH, it’s just the sugars covering the tang, like soda or honey.

As a bitter taster it doesn’t matter how much sugar you put on the tomato it’s still too much. About the only thing IMO that you can put on a tomato to make it acceptable is a bacon cheeseburger.

Then any other equally acidic food on pewter plates should have caused lead poisoning too? E.g. if they ate salads in those days, with a squeeze of lemon juice?