[zmmmmm]

> And 80% of perceived functionality is what most users — even people who rely on spreadsheets for their work — need

This is exactly the insidious myth that the GP is pointing out.

Yes, 80% of the "perceived" functionality might be 1% of the work. But the remaining 20% is a long tail of utterly essential features that are completely fragmented between users. Each user only cares about 80.1% of features, but without the extra 0.1% your spreadsheet is useless.

One user will care that it doesn't print. Another will care that it can't do a sum over columns. Another will care that it doesn't have charts. Another will care that you can't make a bold heading. Another will want statistics functions. Basically your "80% of functionality" has zero value until you do years of work to implement all those 0.1% features.

This myth leads countless people to implement what they think is MVP and then be mystified that their insanely great work still has zero value to anybody they actually show it too.