Hi Guys,
Good thread!
To capture the gist of it *from my experience*.
As stated previously, MM has an opinion and I say everyone has one or two or three or four opinions and it's all gonna depend on their/your mood, life experiences, phase of the moon and who knows what else. Everyone's different is the point and everyone will have their own style/accent based on their background and life experiences.
Can someone improve or learn beyond a certain point/age? I'd say yes. Can they change their accent? I'd say yes again.
For historical background/perspective.
I began playing at age 15 and was playing in cover bands by the time I was 17. I played in bands and stayed on the road for more years than I care to remember. Nothing serious, just dance cover bands, also known as human Top 40 jukeboxes. By the time I was in my early 30's I was so burned out, I quit playing completely for 17 years.
About 6-7 years ago I rediscovered my love of music. I tried three bands of different styles and didn't really connect 'inside' where my heart is. Then one day I saw Wooten on Youtube doing 'Amazing Grace'. Wow! Now that was some serious music! And that was what really got me playing seriously again. I wanted to play like him.
But....no way I could. Different style/technique and physical challenges on my part (missing picking hand fingers due to childhood injury) and upside down strings, being 'set in my ways'....
Anyway, I started playing around doing what I could do and I grew and grew and grew. Did I say I grew? I play nothing like I did 30 odd years ago. Not even close. Do I have an accent? Sure, but *only on certain styles* that go back to my roots. I'll say for sure, that accent doesn't exist when I'm playing my material as a soloist. Very, very different style wise, technique wise and mainly heart wise.
To sum it up (finally).
Anyone can learn to play at any age or time in their life. How good they get is going to depend of *how much they want to* barring physical challenges AND how much they practice. Someone who practices an hour a week is not going to progress like someone who practices an hour a day seven days a week. Practice two hours a day, seven days a week. Three hours.... as many as you can 'afford' with your available time and around your obligations. You will learn and you will get good. And you will have an accent, but it won't guide your playing especially as you *progress musically beyond where you started*. Ask me how I know.
Of course, this is all my opinion guided by everything I've ever done of which most is likely unique to me and me alone. But....if it worked/works for me, why can't it work for you or anyone else?
Best Regards,
Kimberly