Well,first of all,chords are derived from scales!As are melodies.
I think what she's speaking of are players who have alot of chops,and can't reign them in!
In other words,players who play inappropiately on a musical situation that may only require you to play only the most basic of elements.
As a bassist,your main 2 jobs are to 1:Carry the rhythm,and 2:Shore up the harmony!
As a musician,your job is to serve the music meaning,no matter how proficient you are on your instrument,you have to respect the music,and the composer.
I have alot of chops,...alot! However,when you hear,or see me play,90% of the time,I'm playing bass,...I'm on the bottom.
I want you to understand where she's coming from,when she says that!
Scales are paramount to music,and you learn them whether you realize it,or not.(she'll probably be the first one to tell you this).
Who she's referring are cats with alot of chops who are more about themselves,than they are about respecting,and serving the music at hand!