Some do it’s up to you to pick the ones that have open drivers.

Using timeshift would be perfect for this. I run sid and use this all the time to restore back to a snapshot on a bad upgrade.

Yeah but to show a 16:9 on a 4:3 it would be so small you would have more than half your screen taken up by black bars. It’s the whole reason 16:9 was created to also help with the flat and scope film formats. To finally get rid of the awful practice of pan and scan.

It’s also about the lease common denominator a 16:9 screen will show the aspect ratio of a 4:3 but a 4:3 won’t show a 16:9. The whole point of a 16:9 was to fit all common ratios without distortion.

The best advice I can give you is to switch to Linux is don’t right away. Switch the applications you use to open source or Linux compatible alternatives that also run on windows. Then after you get used to those on windows then make the switch.

I would also recommend not dual booting at first since it’s too easy to jump ship at the slightest issue vs sticking with it to figure out the issue just like you would with a problem on windows. It’s a real thing I have experienced it in reverse as a long time Linux user that tried Windows 11 i kept jumping back to Linux every time I ran into issues that caused frustration.