This made me think of:
Charlotte from Charlotte's Web (who is me?)
I don't know if I recall much of the story, but these are my thoughts:
Who is he?
With potent, flowery words speak I,
Writes words in her web. Spider webs are both strong and silky looking.
Of something common, vulgar, or maybe dry;
Pigs are common, culturally vulgar (?), many extrapolations.
I weave webs of pedantic prose,
Could describe Charlotte's teaching to Wilbur as well as the show of having the words in the web.
In an effort to befuddle those,
The people may find seeing words in spider webs to be confusing.
Who think I wile the time away, In lofty things, above all day
Up in the rafters of the barn.
The common kind that lingers where Monadic beings live and fare;
Alright, Monadic is a stretch, but spiders are still common in houses and such.
Practical I may not be, But life, it seems, is full of me!
Practical? Yes and no? Controls insect populations, but it's less practical when we find them and (most) people spend time dealing with that. And, at least where I live, spiders are everywhere!!