> The root of the word celebrity is celebrate.

Actually, that's not quite right. The root of both "celebrate" and "celebrity" is a Latin word whose original meaning is something to do with crowdedness. Celebrity (in the older sense of "being famous") means being someone that people crowd around. The original meaning of "celebrate" was to hold a religious service, attended by crowds of people. Later "celebrity" evolved to also mean a person who has the quality of celebrity-in-the-old-sense, and "celebrate" evolved to also mean to hold some other kind of event that attracts crowds. But "celebrity" didn't ever primarily mean "person who is admired", it was always "person who attracts attention".

(It is still true that people who are famous and then not famous can find it hard to adapt to the change, of course.)