iPad 7th gen

I own 2 ipad 7th gen, 2 of the 9th, and 2 of the 6th gen.

7th gen died out of nowhere, I see that lots of other 7th gen owner having the same issue. Looks like motherboard or cpu failure. I took it to Apple, and they gave me no solution other than spending $250. Aren’t they supposed to fix this issue? Anyone else experiencing this? This happened within 3 weeks of each 7th gen ipad. Older ones are still doing fine.