This summary is not the rule. The rule text controls.
Judges cannot use their position to get special treatment or benefits for themselves or other people. This means a judge should not drop hints about being a judge to get out of a traffic ticket, get a discount, or gain some other personal advantage. It also means a judge cannot let family members, friends, or associates use the judge's title or position to benefit themselves.
The idea behind this rule is simple. A judge's authority and reputation come from the public's trust in the court system. That trust gets damaged if a judge trades on their title for personal gain, or looks the other way while someone else does it on their behalf. Judges are expected to hold their office as a public trust, not as a personal tool for favors or perks.
This rule also covers indirect situations. For example, a judge cannot write a character reference on official court letterhead just to help a friend in an unrelated legal matter, because that uses the weight of the judicial office in a way that is not appropriate. The rule is meant to keep the line clear between a judge's public duties and any private interests.