The Poets of Optimism

This poem from Clark Ashton Smith (CAS) was unpublished in his lifetime, and is not available on The Eldritch Dark, so here's the complete text:

We are the masters

of all the dreams

of daylight and night.

We repeat

and always we embroider

this melody:

The world is his,

the sun is yours,

the moon is mine.

There is also a Spanish-language version of this same poem titled "Las Poetas del optimismo".

I'm not sure whom CAS was referring to as "The Poets of Optimism".  In general, these lines read like a sarcastic comment on writers who seek to uplift and ennoble the human experience, sort of like versifying self-help authors.  But without a better sense of who specifically CAS might have been writing about, it's a difficult poem to interpret.