FWIW, I'm using a single ultra wide screen and never have any full screen windows, always two side by side. Most Linux DEs and even Windows support this out of the box, for macOS there's spectacle.
That said, working on a web project right now, we _are_ ensuring it looks good when maximised on ultra wide monitors, because we figure people might actually do that. But I'm with you there, for most web content it's ridiculous.
That said, working on a web project right now, we _are_ ensuring it looks good when maximised on ultra wide monitors, because we figure people might actually do that. But I'm with you there, for most web content it's ridiculous.