>multithreaded performance is worthless and has been worthless forever.
I have a very opposite opinion; single threaded performance only matters to a point where any given task it's doing isn't unusable. Multithreaded performance is crucial from keeping the system from grinding to a halt because users always have multiple applications open at the same time. Five browser windows with 4-12 tabs on each, on three different browsers, 2-4 Word instances, some electron(equivalent) comms app, is much less unusual than I'd like it to be. I have used laptops with only two cores and it gave a new meaning to slow when you tried doing absolutely anything other than waiting for your one application to do something. Only having one application open at a time was somewhat useable.
I have a very opposite opinion; single threaded performance only matters to a point where any given task it's doing isn't unusable. Multithreaded performance is crucial from keeping the system from grinding to a halt because users always have multiple applications open at the same time. Five browser windows with 4-12 tabs on each, on three different browsers, 2-4 Word instances, some electron(equivalent) comms app, is much less unusual than I'd like it to be. I have used laptops with only two cores and it gave a new meaning to slow when you tried doing absolutely anything other than waiting for your one application to do something. Only having one application open at a time was somewhat useable.