Your second sentence doesn’t make sense because their post presented a lot of good points that move the argument past a “I don’t like it so it’s bad” argument. To knock it up another notch those same points could be applied to Linux over Windows. Market (user) adoption is the only real metric to measure against. The argument I submit is that a tool like Gimp can’t be considered better if it can’t claim the market to prove it, if it was fundamentally better at its core adoption would pass the non open source leader.
There couldn't be a wrose metric for quality than market share, because it involves many different aspects of marketing and social dynamics, as well as the context of the time in which it was created. You don't need to look further than Internet Explorer for this, or in the programming world, JavaScript. Also the parent comment didn't present any points.
