Yes, but at what point in that process would you call yourself a guitarist? Not at the end I assume.
However, I am with you on this. I am neither a guitarist nor a DJ but I have tried both and picking up the basics of use decks is much easier.
There is a lot more to being a good DJ than the mechanics of the process but anyone claiming that DJing at any level has the same scope for complexity or requires the same level as knowledge as a top notch guitarist is just wrong.
That said, the guitar is possibly the one instrument where there are more talentless incompetent 'players' than there are DJs at any abilty level. Some people seem to think just putting one on is cool is some way.
I agree with you too, but not because it makes anyone look like the argument for or against musicians is being won. No I agree with you because what I am hearing is the voice of reason and common-sense.
I think DJ's can be very skilled and also be very talented at keeping their audience captivated with a good performance. However this is in the context and confines of being a DJ and bears no relation to anything a musician does. I don't have a problem with DJ's, providing they don't have delusions of grandeur (read that as being a musician via turntable use).
As for the guitar, again I agree with you. Yes there are plenty of people that mess around, take lazy short cuts and also have a slack, lazy and "this will do" attitude to learning and playing. There are many who play "licks" instead of actual real musical ideas formed from good grounding in the fundamentals, i.e. chords, scales which are the tools of the trade. Obviously just playing a scale or chord is not real music, but learning how music works will eventually lead to good music if you have both the intelligence and the talent. Also I have never looked cool and wearing a nice guitar isn't going to change this! Howecer I have had many people approach me over the years, after a gig or when they have heard a CD/Cassette via someone else, and they thought I was cool due to the music and the sounds I was creating. Putting on a nice guitar to impress is easy, but gaining respect and admiration through well written and enjoyable music is not! This partly answers your other question of "at which point do I become a musician/guitarist". You tend to reach that point when you play your instrument or a recording of yourself, and then suddenly see that you have achieved most of your initial goals or ambitions with regards to technique, knowledge and experience. You also mentally feel that level of maturity that embelishes your whole being musically.