For good reason. Running those updates requires restarting the computer, which in turn means you have to get your working state setup again after each update. People use computers to get things done, and running updates often has the opposite effect.
That and updates are going to be the time where computers stop working. If you don't change anything, it will generally continue to work fine for years. My experience with MacOS at work was that I could expect to spend at least a day fixing whatever broke after each major OS version update, so naturally I'd put off doing it for as long as possible.
Even if things continue to work, updates may come with UI changes that disrupt the user's workflow (and the trend tends to be to remove or hide functionality and make things less useful/information dense as time goes by). Unless there's something you specifically want, modern software updates tend to be high risk low reward from the user's perspective.
Incidentally this is why I prefer desktop Linux. With the exception of Firefox turning into Chrome over the years, FOSS software tends to be remarkably stable. My home computer feels like it hasn't changed at all in almost a decade. I never have to fiddle with it.
What was surprising to me was that having an Ubuntu Laptop and a Windows 11 PC side by side that Ubuntu needs about twice as often restarts compared to Windows.
I only have that setup 3-4 months, so it could be an outlier though.
For good reason. Running those updates requires restarting the computer, which in turn means you have to get your working state setup again after each update. People use computers to get things done, and running updates often has the opposite effect.