The salary cap system is trying to assure that all teams pay the same amount of wages, so that no one team can buy its way to a title.
This is solved quite easily in BB by the fact that all teams in the same league have the same income structure, and therefore should typically end up with the same amount of income.
I see the full picture quite fine, and the point of the "suggestion", sarcastic or otherwise, is to make _you_ see the whole picture: that drafting a 18-year old MVP with $5,000 salary is way more valuable in a lower division, since when all is said and done, when you sell it the income (relative to the team's weekly budget) is much higher.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."