I don’t believe that is what she meant. In my circles what that means is there are so many wonderful girls being overlooked because “boys” and their parents are looking for the wrong “qualities” in girls. They are not looking for their middos, kindness, generosity, compassion, love of yiddishkeit, chessed, etc. They are looking for money and Yichus and if the girl doesn’t come from a family that can supply that, she is not considered for a shidduch. Therefore many parents of boys claim “there are no good girls out there” because the pool for what they want, whether they deserve it or not, is dwindling.
There are many, many great girls with great qualities out there, whether they are willing to kill themselves to support a learning guy or they want their husbands to be mepharnes the family as he is supposed to according to the Kesubah. But they might not have the 2 qualities plus the ability to maintain an anorexic body frame.