I get that detachment from the DOM but jQuery has useful tools beyond element selection and manipulation. For that matter, why doesn't App Script expose an int

I get that detachment from the DOM but jQuery has useful tools beyond element selection and manipulation. For that matter, why doesn't App Script expose an interface that expresses page components as part of a DOM? The Sheet app could provide an interface to a cell with classes for its particular column, row and sheet, allowing access with jQuery / CSS selectors. Instead users have to learn a new interface with stuff like Spreadsheeet.getRange(). And maybe they've revised the docs, but I spent a fair amount of time in them and didn't see any discussion of what JavaScript tools would not be available. I had to figure that out by trial and failure.