In the year 2000, a M1 MacBook Air would have been the world's fastest supercomputer (or second fastest if you had the base model with the 7-core GPU).
https://top500.org/lists/top500/list/2000/06/
https://www.notebookcheck.net/Apple-M1-GPU-Benchmarks-and-Sp...
Impressive, of course; but not quite that impressive.
Only true if all you're running is matmul (supercomputer has general purpose CPUs so more flexible than M1 GPU) - also those flops are probably FP64 in supercomputer ratings and FP32 in M1.
As a smart man I knew used to say, supercomputers are about I/O not raw compute. Those have terabytes of RAM not 8GB.