That’s true. The nostalgia nerds can rightly criticise the ever-spiralling bloat and inefficiency of modern systems. But modern macOS can go for months without a crash/reboot! Almost unimaginable in the Mac OS 9 / Win95 era.
This is what pushed me to get my parents on NT4 in 1997: the system would run until you wanted to reboot it, rather than crashing twice a day because Netscape decided to have a conniption like Win9x did. Never looked back. Win2000 was absolutely awesome for them, WinXP was twice the size and half the speed but fine and very long-lived, Vista was extremely reliable despite all the hate heaped on it...and we're approaching the modern era.
Meanwhile, I was running IRIX (for which my record was 4 years without a reboot, and that only due to a power outage) and Linux; and when I got some money, macOS X: all rock solid.
edit: I just remembered that Netcraft used to have a server uptime leaderboard, and for quite a while in the 1990s, Lamborghini was at the top of the list with their IRIX servers. The earliest archive I can find of the list is from 2001, with ONLY FreeBSD and IRIX occupying the top 29 places: https://web.archive.org/web/20010226190549/http://uptime.net...
Putting Win2K on my parents’ tower, replacing Win98SE, absolutely transformed that machine. It instantly went from cranky nuisance to unstoppable workhorse. Software updates like that have become depressingly rare.
