I'd understood that to have (a bit) more comedic thought behind it: For example if your classmate can't work out how to do something on their smartphone, you say "OK Boomer".
That's what my niece tells me anyway!
I've never come across the term used like that (although I've never actually heard it being used at all!), which is all the more surprising considering that my phone usage (both in terms of what I do and how I go about it) would be considered... rather peculiar by pretty much everyone of a similar age: for example, I type using only my right index finger (in a rather clunky way), whilst holding the phone with my left hand. Very much the stereotypical older person style!
On the subject of music, most modern stuff (at least, the stuff that most people seem to listen to) is rubbish (and seemingly exclusively about "I love you, but you left me" type subjects). I don't really listen to much music (and never have; another seemingly alien concept to others my age, who almost exclusively have headphones attached to their cranium), but I seem to recall music from approaching a decade ago was better! However, it could be that I just have an odd taste in music: classical, film and television, musicals etc, and I'm partial to a bit of stuff from the 1970s/80s if it's going. It could be that being a musician has influenced my preferred genres. (As I type this, I'm listening to music from Game of Thrones, because I played a sequence of chords on a piano earlier which sounded exactly like something from the programme, but I have no idea what! Best listen to said music to try ad find out...
.)
Also, on the subject of years I remember, I have notable memories of 2012: London Olympics, Queen's diamond jubilee, (royal wedding? or was that later?), first overseas family holiday for years (to Sweden; also the first time I'd ever been on a plane!), moving from first school to middle school (3-tier system where I live).
I don't really remember much from 2007, other than there were floods! You probably saw aerial shots of Tewkesbury Abbey surrounded by water... not far from where I live! On whatever day it was when the flooding started, my older brother and I were collected from school by our dad, not much different to normal. However, getting home involved going through water getting on for a metre deep at one point*. Luckily, at the time my dad had (amongst other things) a long-wheelbase Land Rover Defender (don't ask me any details; I have no idea! It was grey though...
). No problem going through the water, accompanied by the unusual experience of water seeping into the vehicle through the obligatory holes in the floor!
*We didn't actually
have to go through; plenty of alternative routes with a lesser degree of flooding exist. However, my dad being himself, we went straight through the worst local flooding point, because we could!
Anyway, enough reminiscing! I'm not actually sure what generation I'm part of (born 2002), but I certainly wouldn't class myself as a "snowflake". I'm perhaps a bit too controversial for that...