This article says,

"Put the most tax-efficient (municipal bonds) in taxable accounts like a brokerage account or Roth IRA"

Municipal bonds in a Roth IRA? Really? I strongly disagree. Why would you put federally tax-free bond interest inside an account that makes tax-free distributions? That doesn't make sense. I agree with the brokerage account idea, but not a Roth IRA.

I hope this was a typo, but it should be corrected.