Advantages and Disadvantages have narrative and mechanical effects. The narrative effects are independent of Rings (e.g. Painfully Honest says you can't lie or let lies go unanswered). But the mechanical penalties of disadvantages seem to be tied to specific Rings (e.g. Painfully honesty give strife when making certain Air checks).
Players have the freedom to choose approaches that avoid Rings associated with their disadvantages. I could, for example, be painfully honest in a reasonable, Earthy way. Or use Fire to incite with my honesty. Outside of hoping I will be an honest role player, what can the GM do to trigger the mechanical aspects of these disadvantages?