For example, there was no pre-emptive multitasking. The CPU, the 68000, was designed to enable it, but Jobs didn't care about stuff like that.
Yeah, but it also was designed around 128kB of RAM (itself an increase over the original plan to go with 64kB as I recall) so it's not like it could have run multiple apps if they wanted it to.
They were just trying to build one computer back then -- not a platform that would be in use in the future.
It set the standard for the one button mouse too, which Apple has stuck with to this day.
In fairness there was no consistency then as to what other buttons did, if anything, and it was confusing to people who already had to be taught what a mouse even was and how to use it. Also, Apple's mice ship for some years now have multiple 'buttons' (technically trackpad areas -- the mice have no physical buttons at all), and the platform has supported contextual menus since the late 90s.
Also, this isn't really a Steve thing. The NeXT machines all had two button mice.
The power switch was conveniently located on the keyboard, so you could accidentally power your machine off more easily.
Totally untrue. The original Mac had a power switch on the back left side. A big rocker switch near the compartment for changing the clock battery.
Power switches on the keyboard didn't appear until ADB came along for peripherals, which on the Mac was '87. Annoyingly not all of the machines could be powered on from the keyboard even as late as the mid-90s. And none of them would just shut down from the keyboard -- there was always a dialog box that could be canceled. The button was more related to the Apple II keyboard mounted reset switch.
The floppy drive had an electronic eject mechanism, which was prone to failure and prone to getting stuck if the machine crashed.
Auto-inject was even sweeter. I never heard of auto eject failing in except in truly ancient drives (20-30 years old) that need to be lubricated and fixed up anyway. And if the machine crashed the disk would either eject on reboot, could be forced by holding the mouse button down during boot, or in the absolute worst case, ejected using a straightened paperclip in a subtle but conspicuous hole even with power off.
I don't think that was a Steve thing either -- hell, it took some effort just to get him to agree to the Sony 3.5" disk, which was a new thing and no standard at the time. Auto eject isn't a bad idea though, especially on removable media, so long as it can be overridden.