I like your use of the word ‘mimic’.The question is not how many terra flops it takes to mimic a human mind, but how many terra flops does it take to mimic the brain of a crow. The goal of the thinking might be more important than what is being thought, such as self preservation with a future existence.
In my mind I have started replacing the the word ‘Artificial’ whenever I see it with ‘Apparent’.
I do believe there’s a lot of nonsense talked about ‘conscious’ computers. Examine the basic command set of computer - add, subtract, compare etc. - there’s nothing in there that allows for consciousness.