No, you're comparing apples and oranges. All an SSD sequential read is doing is copying data from one place to another. So you should be comparing SSD bandwidth to memory bandwidth, not SSD bandwidth to (time it takes to execute some arbitrary algorithm). Or you should be comparing SSD bandwidth when performing millions of tiny random non-sequential reads and writes, to the algorithm time.
What your comment demonstrates is that it is possible in some cases for I/O to be fast enough to not be a performance bottleneck for certain kinds of programs. But not that I/O is not slow.
What your comment demonstrates is that it is possible in some cases for I/O to be fast enough to not be a performance bottleneck for certain kinds of programs. But not that I/O is not slow.