From my point of view, celebrities, they have a good sense of humor and are able to present themselves on screens for the audience to see easily. Researchers are more serious and they are behind screens rather than in sight
What I see, connection with money is wrong comparison. However, the major problem is; The pressure of writing for a prestigious journals, combined with a self-imposed expectation of making the research sound as technical and imposing as possible, can lead to unnecessary verbosity in an attempt to impress colleagues, peer reviewers, and journal editors.
In my opinion, this is a matter of the standards of promoting celebrities representing various fields of art in the media that have been dominant for many years. These media promotions are dedicated not only to adults but also and more and more often to teenagers and children. Children in the media, more and more often in the new Internet media, on social media portals watch music videos featuring music performers recognizable by the media. It is similar with the field of film art. The advertisements feature famous actors, singers, sportsmen, etc. In addition, bloggers and influencers who run blogs on social media are increasingly becoming celebrities for children and teenagers. These blogs publish film reports, documents, interviews, etc., which gather a large number of fans, users of specific blogs.
This is the wrong question. Most important is how someone can become a celebrity, not which profession he/she is coming from. Some scientists and researchers are also celebrities, for an example married couple from BionTECH, or Noah Chomsky etc. But, it is truth that scientists are minority in the world of celebrities. In the world of commercial/corporate media any individual is only number, a piece to be sold, and any user of those media is also only number, a piece to be sold to advertisers. Making a celebrity doesn't mean that someone is really important or achieved anything important it his/her professional life. For commercial media is more important that somebody is "avaliable" to act as "celebrity".