If you weren't a struggling, angry and rebellious young man/woman in NYC or London (plus a few other large metro areas such as Philly, LA, and Manchester) in the mid-late 70's, playing in a band in your early 20's with a rebellious passion that took precedence over playing ability,....you probably never got a whiff of what 'punk' was........If you grew up comfortably in a suburb in the MTV-era 80's-90's, you likely do know what is regarded by today's youth, as 'punk'.
Iggy and the MC5, etc were just regarded as pure rock n' roll acts when they hit,....the NY Dolls were 'Glam Rock'. 'Punk' was a word first attributed to the Pistols, Ramones, Slits, Gen X, Clash, Siouxie, etc....I don't regard Iggy as part of 'punk rock' just as I don't regard Cliff Richard as part of the 'British Invasion',...nor the Bee Gees as pioneers of the Disco Scene.
I think you might have missed my point about Iggy. When you talk punk, the attitude vs. punk the music - that's where lines become gray.
I don't think the inability to play instruments well was a ticket into a punk band - Steve Jones is an accomplished guitarist and Simonen ain't too shabby of a bass player.
But then, maybe we're using labels too strictly. In musical terms, you can be part of a scene at its inception or later on. The spirit/attitude remains the same, as does the sound to a certain extent. (see Minutemen) Bad Brains represented DC, as did Minor Threat. But if you go by strict definition, Bad Brains weren't punk because they were amazing musicians. Recently (well, 15 years ago LOL) Helmet brought math/sludge rock to the masses - but for the most part they were Julliard musicians. So?
Meh. Just because the word 'punk' was first attributed to Malcolm Mclaren's band toy - doesn't mean the term can't be used retroactively.
Some people say Neil Young is the godfather of grunge. Where does that come from? The flannel? Or the sound?
To me, it is VERY interesting. Otherwise it would be one big blob of everything sounding the same...hey, that's like pop punk today!