We are saying the same thing here, though I think you are missing the point that this is all a response to someone asking if SMT is useful anymore since there a

We are saying the same thing here, though I think you are missing the point that this is all a response to someone asking if SMT is useful anymore since there are many cores in almost every CPU. The answer is that it is absolutely still useful since your example is niche and most software/systems can still benefit from being able to work around memory latency with more threads.