Jupiter, I’d say so, plenty of 5-9 riders on them, between 5-6 and 6ft or so seems to be normal ideal range, but ask Jeff, he explains it well. Don’t try to set a Jones up like a ‘normal’ bike, it’s quite different. I’ve ended up with my bars a few inches higher than I would on other bikes and it seems like a win-win thing, no drawbacks (it’s now about 10-12mm higher than in the pic). I’d say geometry is the biggest part of what makes it work, then the fork and bars, then the frame type/material in that order.
I was looking at the new El Mariachi at a show recently, that’s a really nice bike.