> no software made in 2021 should have a "Save" button: it should be done automatically […] Just because I've opened a document that doesn't automatically imp

> no software made in 2021 should have a "Save" button: it should be done automatically […] Just because I've opened a document that doesn't automatically imply that I want any changes to be saved without asking, though - it's not that uncommon that I open something for reference purposes only, so that any changes are either unintentional (accidentally hit a button or started typing with the wrong window focussed), a side-effect of copying data into something else (e.g. unhiding some layers in a graphics or CAD file so I can copy that data) or else just some experimental or otherwise temporary changes that I certainly don't want to keep, though.