Inflation is perceived as good for the debtor; the value/denomination of the debt remains constant while the value of the currency in which the debt is repaid is diminished. Since there is more money in circulation, there is more money with which to repay the debt.
What are the advantages? Inflation can ease the debt load. Rhode Island chose this as a strategy in the 1770's/80's in the US, which is why it was the last state to join the Union (RI was deeply in debt due to speculators, so they inflated their currency as a strategy ). Nobody wanted Rhode Island dollars
What are the disadvantages? Obviously inflation is bad for the lender. If inflation is rising and likely to continue to rise, then lendors must take this into account. That means that credit may be restricted, which may inhibit large and cooperative projects. Inflation is bad for anyone who is saving. Anyone with cash assets watches their value erode. Spend your money now because it will be worth less tomorrow. Again, this discourages investment in the future. This is the key to the italicized portion of your quote. If the leadership of a developing country inflates the domestic currency they can preserve their assets in foreign denominated currency, but ordinary citizens watch the value of their holdings dwindle away.
Mike Walden summarizes that inflation is bad because
- Unless you constantly work harder, the value of your wages and savings decline
- Businesses have trouble investing in new ventures or even just staying stable against competition
- Interest rates rise, making it difficult to borrow money.
(All of those assume that you don't have the opportunity to anticipate the inflation and shelter the value in foreign denominated currency, which the leaders do in the example you cite).
You restricted the question to domestic, but inflation theoretically causes other nations to change their exchange rates for your currency, which makes it more difficult to buy foreign goods. That can have significant consequences in a world where economies are coupled. (Petroleum in the 70's comes to mind). Developing countries also tend to be somewhat coupled - since most developing countries don't have the infrastructure to permit competitively priced domestic manufacture of industrial goods. (including things like farm equipment, medicine, petroleum, etc.)