Welllll....
In the interest of "logic" (one of my unfortunate obsessions because although I rarely mean it personally, it pisses people off), someone being famous and/or prolific doesn't put them above criticism; and by the same token, NOT being famous doesn't negate someone's ability to form an opinion or generate intelligent criticism. If fame were the only metric for judging ability and worthiness, we'd be in a really crap-tastic world of dreary oppression.
And again, just logic here... nothing personal... but for the very reasons you're allowed to lose your respect for Hendrix due to the nature of his death, others are allowed to continue respecting him/his music regardless of the cause of his death. And that reason is simply that we all have our own subjective value systems.
Away from logic and onto personal perspective: I think Satch's SSB was about as good as you can do with such a limited scope. I mean, if he had gone all 'widdly widdly' on the thing, it might not have translated into a proper tribute to the national anthem. Hendrix's was more than a touch sarcastic... the breakdown of the song is intentional and playing the anthem was meant ironically... it doesn't serve as an exhaltation. Satch was genuinely respecting the anthem, whether the playing was impressive or not. Plus, at the end when they put the caption of what you can't hear him say, "That was cool," it pretty much sums it up. He was just like a kid. That's pretty cool, too.
Greg