Cultural Virtues?

On page 45, Adams says that “our relation to some goods is more important, for the meaning and excellence of our lives, than our relation to others.” He uses to this to justify cultural goods as virtues, but he also says that caring about cultural goods also means caring about the persons involved. I find it to mean all goods are ranking on a scale in which some are more important than others, where goods equal to our relation to others and higher would be virtues.
From the description of his ideas, I find that his view is a type of sliding scale of what is good for an excellent life. At the bottom are pleasures like sun tanning, and eating your favorite ice cream. Further up would be virtuest actions not yet habits. Then moving up would be cultural goods, and at the top would be common virtues. From this scale, it seems that Adams drew and line under cultural goods and wrote virtues next to it.
It feels rather arbitrary as to why cultural goods should also be virtues. Many things would be able to fall under some goods more important than our relation to others. If cultural goods are virtues, it would also be that any type of achievement would also have to be a virtue. Since for an individual that good is more important for the meaning and excellence of his life, than his relation to others.
And so, my main complaint is that his rational for cultural goods as a virtue is too broad if he wants to limit it to only cultural goods. Not only that, but it is too broad in general and makes too many actions/ideas virtues, which I believe Adams doesn’t want.