Neither harsh nor impolite, JSFfan. You're always very quick to counter anyone's statement with a quote or a link to something. If you come up with a statement like that, it shouldn't surprise you if it's challenged - especially making military judgements on a military forum.
That said, it raises a very important issue. Two actually. How F-35 will fare in the LL environment would be interesting to explore. Same goes for doing close combat in an environment where it's manoeuvrability has been compromised by its other design requirements.