Aren't they poisonous because of the solanine they contain?
The amount makes the difference – 3-4 tomatoes a day are harmless.
Before throwing them away, there are many recipes for them.
For 1 kg of tomatoes, 1 liter of salt water, vinegar, onion, and horseradish in one piece. Let it sit for about a month. I always leave them whole; if you quarter them, they become too soft for me.