WendyG answered the meaning of the quote itself quite well I think, though I'll summarise it here.
People usually believe that getting rid of noise is needed for sleep, but replacing the noises with better ones can work too.
"So Much As"
So Much As is a variation on "As Much As".
It's one of the more awkward and clunky common phrasings in the english language, explaining it is a real challenge.
But for many people, getting better sleep may not be so much a question of getting rid of noise as a question of replacing it with better noise.
"So Much As" is literally a value-comparison.
What's being said in the quote is that the normal Answer(Sleeping in silence) is not always ideal and that the alternate answer(Sleeping with the right noise) may be better.
It's made more confusing by describing solutions to the problem as "questions". They're not, it's just english being weird and applying Similes where they don't make any sense and forcing the phrasing into knots to support this behaviour.
To summarise it down into a simpler version that retains all the same connotations and meaning.
In the problem of Getting Better Sleep; Many people may find Getting Rid of a Bad Noise to be a lesser solution than Replacing them with a Better Noise.