Plus one for personal preference.

Since everyone knows that it is not official, the person wearing it also knows.

Either you don’t recognize this logo, or you really think it looks good and like it and wear it.

There is no need to think too much, and don’t look at others just because they are unhappy. You think they are low or ugly. What does what others wear have to do with you? Is it necessary to judge?

Treat it kindly