Good developers are 'hardly working' and bad developers are 'working hard'.

Good developers are striving for the simplest solution in the realistic time frame in the given context and then they just go do it, which is what I mean by 'hardly working'.

Bad developers are at it day and night to further screw up an already screwed up system, they are 'working hard' at the screw up!

And as not everything is right in this world, the 'hardly working' ones either quit or have to make way for 'working hard' ones.