MacOS Catalina: Slow by Design?

I completely understand why things are going the way they are as our computing environment has become ever more hostile. But I am very nostalgic for the time where I would power up a Vic-20 and within seconds be able to get to work.

Teaching my daughter to program on a modern computer, we spend more time bootstrapping and in process, than we do in actual development.

That computers are just slower to interact with now is such a truism that we hardly remark upon it any more. It seems utterly insane that in the early 90's I could just run Windows 3.1 on a bit of kit that in all likelihood wouldn't even power a toaster today, and the experience was, well, frictionless. I don't recall ever thinking "wtf is this thing doing?", whereas today, by contrast, if I have the audacity to be afk for long enough for my Windows 10 box to go sleep I know I am in for an infuriating waste of minutes' worth of disk thrashing before the bloody thing even deigns to reacknowledge my existence.

I recall windows 95/98 being pretty slow to boot. I also recall being warned by teachers not to move the mouse while things were booting as that would allegedly slow things down further. These days the only real time I wonder "wtf is this thing doing" is when I'm waiting about 5-10 seconds for my mac to wake up from sleep.