Good to know. That comment like some others I have read can be taken at face value or it could be taken as sarcasm, without being in front of the person saying it it's hard to tell. Body language is most effective in communicating what you're hearing. When you're reading it that's lost, it could be taken either way.
As I said I don't know the man, I respect his work and his dedication. I always strive for succinct communication that won't be misunderstood. I don't think however that you can pigeonhole upright in jazz as it's used for so many different styles and the same could be said for electric bass.
I would go as far as saying yes, some pop music is repetitive but we don't all play pop music mate, some of us go so far afield from that on electric that it could be considered as spontaneous and inventive as anything that Mr Carter has played.
Now if you want to work a lot you may have to play repetitive lines that you're not completely enamoured with but they pay the bills or you may be in a position to play whatever you please and people hire you to do that, it's not really set in concrete is it?
So you see we all have an opinion and we're free to express it here without prejudice or judgement so I'm glad you chimed in because you know the man personally and I understand from what you're saying that Mr Carter would not disparage electric bass players and is merely highlighting what is in his mind the difference between what he is doing in jazz and what the pop world is doing.
"Some" of the pop world. People keep reading it as if he's talking about ALL electric bassists.

