Your bass buying purchases shouldn't be influenced by a quote. On the opposite end of the field, Anthony Jackson, who's played on even more records than Marcus and is arguably a far more influential figure, plays a $20k bass and has advised people to buy the best bass they can afford. I wouldn't alter my purchases based on either quote.
I agree with you but I think that most people's bass buying purchases are influenced by quotes and what others play.
There's a difference in getting the best bass you can afford and obsessing over getting another bass because someone else likes it or says its better.
I've been guilty of this myself. Focusing more on getting a different/better bass than focusing on becoming a better player. Bass A and Bass B are both very similar in quality but I feel like I'm going to be a better player on bass B because it's new and someone else sounds good on Bass B. After having Bass B for a few weeks though, I realize I'm still the same player so I start looking for Bass C because it's surely going to be better!
With all that being said, there is nothing wrong with buying a quality bass or even the best bass you can afford whether that's a US Fender or a Fodera NYC. My point is find a really good bass that you really like and focus on technique and playing. That's what i'm trying to do!

