10000 hours to proficiency divided by 6 is just 1666 weeks or 32 years. That's ignoring that just listening to the news is not the deliberate practice that is supposed to be accumulated for the proverbial 10000 hours.
I wasn't claiming that 6 hours a week was enough by itself to master a language, the parent comment suggested that people would find it hard to fit this much practice into their life.
I can use myself as an example of doing this kind of thing, when I'm in France I don't watch any english language media, and seeing a big improvement in my French.
