Shadow goes to mechrotic island when he has those times where he has to lay eggs which of course the three living said island do cook and eat up the eggs
I was just thinking of the Mythical Super Forms AU, but yeah, Overgrowth Sonic, Ravenous Metal, and their pet Infinite would not hesitate to eat the Edgehog Caviar.
Also I looked up how you even cook caviar and apparently it's supposed to be eaten raw/slightly chilled??? Not to mention that it's usually eaten as a spread on plain bread/crackers??? Rich people what the fuck??? Now I'm imagining like a cartoonishly rich kid eating peanut butter and caviar sandwiches instead of PB&J. I'm getting super off topic.
Anyways yeah, not only would they eat Shadow's eggs, they would eat it right out of him. Using their tongues to make sure they get every last egg. Shadow can't stress over having to endlessly kill his own children to save the planet while he's busy getting his shadussy ate.