I agree that the author seems to have made up their mind before taking the flight, and I will say that the criticism cleanliness and wear on the hard product seems valid, in my opinion, especially for a sub 10 year old plane. The whole question of doors is 'meh' for me as I don't enjoy cubicles with doors (I'm not talking SQ suites here). For soft product crews are hit and miss on any airline.
What I think this exposes is that as J products are getting better and better the delta between J & F is as small as it has ever been and getting smaller. As much as I really enjoyed my experience on LH-F (747-8) it was last-minute points deal and I don't see the value in paying more for F versus J, even if someone else is paying.