The document discusses how cross-browser incompatibility is increasing rather than decreasing for developers. It notes that while many developers have written raw DOM code in the past, libraries and frameworks now exist like jQuery, Lodash, MooTools and others to help abstract cross-browser differences and simplify development. However, the rapid evolution of new browsers, devices and technologies means that cross-browser issues continue to challenge developers who must adapt their tools to keep up with this fast pace of change.