Thanks for the downvote on what I thought was not even controversial. If we have to discuss whether "SSD is undoubtedly the single biggest system performance upgrade in the past 10 years." is correct then I think we can call it agree to disagree.
Not much point in complaining about downvotes on here. There is a certain population of, well, professional contrarians on HN, and there's also the (deliberately?) poor design decision that places the upvote and downvote arrows a few pixels apart. Someone may have voted you down by mistake. Think empty boat[1], not U-boat.
SSD is undoubtedly the single biggest system performance upgrade in the past 10 years.
And we will soon past the halfway point of 2019, Apple is still selling an iMac with 1TB 5400 RPM HDD by default.
Apart from AirPod and Apple Watch, there is nothing on the current Apple's product line I am satisfy with.