You kinda made it sound like it was automatic. You literally said:
It is automatic by default unless a user goes into settings and disables it.Defragging is done automatically on Windows 10 nowadays.
Most Windows users never look into their settings as they never think that far ahead.
Just about everything in Windows 10 can be enabled and disabled if a user is willing to dig deep enough and learn how to turn off the features that are set by default.
Can't say what can be enabled or disabled in Windows 11 ain't got Windows 11 yet and that will be up to the Wife.
I work on Windows 10 computers for people and make good money doing so and it gives me something to do.And since I haven't run Windows on any machines of mine since Window 7, and given that 10 does so much automatically, I'd say mine was a more than fair assumption.
I've never had a Windows OS where I couldn't disable what I wanted although some stuff takes more effort than perhaps just a check in a box.
They are in my house ain't got any of them in any of my computers although I've installed SSDs in other peoples computers when needed.Equally fairly, SSDs are not exactly "newfangled"; they've been availably on the shelves for around 15 years give or take, and the tech has been available around 30 (though not exactly at consumer level prices).
I still have a dozen new old stock mechanical hard drives so I doubt I'll be buying any SSDs anytime soon.
Bottom line for myself is I don't do nothing automatic.I only have 1 SSD and it's in my desktop.
Though my laptop's running an HDD, I still wouldn't want Windows auto-defragging stuff. SSD was a more universal example, but I've had a few very loud and crappy drives. A constant defragging outta my control could be a problem, not just cozza noise but drive wear, too. HDDs are also harmed by too much defragging. I mean they also have lifespans that are affected by I/O ops. Those moving parts get unhealthy and you can hear when seeking gets harder or a motor is struggling -- both affected by this. And besides, like compulsory updates, it can be a huge disruption if one is busy on one's PC.
Which is sensible
First thing in the morning when I sit in front of anyone of my computers is check and install any available updates a habit from using Windows OSs.
Never had any problems with Windows updates dissruppting anything as update times can be set to user convenience.