Macs helped artists be artists, but they weren't 'truly worldwide democratisation' for creativity, not by a long shot. That title in tech goes to digital cameras. The one prolific form of creativity that spreads throughout the wider public is due to the CCD, not Garage Band (the proportion of the public who are musicians has declined over the past century). Digital photography is the democratisation of creativity, if anything is.
Also, 128-channel audio recording postdated the personal PC. And the $100k pricetag is absolute rubbish. 8-track recorders weren't 6-figure investments, not to mention that machines that could record good quality audio in the 80s were categorically not $1k PCs. And your own personal typsetting engine? Seriously? The content of a well-written letter takes a backseat in value to being able to put a crappy starburst on a bake-sale flyer? Even crappy teen angst poetry is more creative than the way the general public used those personal typsetting engines.
As for CAD, sure, you got me there. But the subtext of the conversation has been artistic creativity, not engineering craft skills. And CAD is far from the domain of Macs, the item being lionised in the video - for example, AutoCad has been on Windows for 28 years, and took an 18-year hiatus on the Mac during this time. I mean, if the argument is "Macs were the original personal computer", then that's wrong too - PCs had been around for years before Macs came along. Macs have been something special, but democratision isn't a strong point - indeed, for a goodly portion of their life, the Mac has been used as a status symbol; hard to do for something that is supposedly democratised.
Democratisation doesn't mean it also magically broke poverty barries.
Actually, it does. Democratisation means "everyone gets a go", not "the elites get more power". When a minority gains the right to vote, that's democratisation. When an elite social group gathers more professional power, that's something else.