I think you're both right. Obviously a desktop linux ("lightweight" or otherwise) makes more sense on a desktop than a retrofitted android, since android will

I think you're both right. Obviously a desktop linux ("lightweight" or otherwise) makes more sense on a desktop than a retrofitted android, since android will always be, first and foremost, a mobile OS. That said, android's app stores have produced, in a fairly short timespan, an entire ecosystem of polished, useful apps that users love. Without android, many of these applications wouldn't exist at all. As a developer, a regular old linux distribution on my desktop makes more sense[1]. As a normal everyday user who just wants the additional amenities offered by a big monitor and a real keyboard, "android on the desktop" makes more sense. [1] - I'm actually partial to FreeBSD.