Well, one thing is knowing how to play barre chords and another thing is choosing when or when not to use them. I agree with the assessment about Bruce using higher registers to fill his own niche and not interfere with the bass, which covers the lower registers. That makes perfect sense, but Bruce does use the barre chord sometimes, as seen on the above Apache video on YouTube that Jim provided (G major following the D minor).
However, getting back to barre chords, I have no problem whatsoever playing barre on two of the three Major chord formations, but I do have a problem with the third one, the one that we all know as D major. You can play that one all over the neck using the first four strings, but using all six strings to play this chord formation is a problem for me, I guess because I never practiced it. I am simply amazed at how Ecca uses this chord skillfully and to great advantage in his Savage "tuition" video, when he plays it on the 10th and 9th frets, where the fret are very narrow and where Bb and A are very uncomfortable to play as barre chords. I mean I can play it, but not as fast and automatically as I play the other chords.