Making a hobby etching thing that isn’t anywhere close to the state of the art is cool, but not exactly anywhere close to what is needed to look at a modern chip.
You’re trivializing the challenge of modifying something that is on the order of 50nm wide and specifically designed to not be able to be tampered with.
I feel like you don't understand how time works. ;) We've barely had any of this technology 50 years. Give me 500 years and I absolutely guarantee you that I'll fuck up some 4090s with some gadget the size of a mobile phone that costs the 10 cents and it'll work perfectly fine.
You’re trivializing the challenge of modifying something that is on the order of 50nm wide and specifically designed to not be able to be tampered with.