Beauty premium is a concept that's mostly related to the preference or bias that's given to individuals with a good look over their counterparts. It's the reason why good-looking individuals experience higher chances of getting a job over their less attractive counterparts. It's not just applicable to the job sector but also applies to the crypto space.
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If I'm not wrong, you are talking about a specific case of the broader
halo effect (in fact, this is the first time I read the term you mentioned "Beauty premium", and after this I doubt that I will forget it, so thanks for sharing).
A person's attractiveness has also been found to produce a halo effect. Attractiveness provides a valuable aspect of the halo effect to consider because it can be influenced by several specific traits.[42] These perceptions of attractiveness may affect judgments tied to personality traits. Physical attributes contribute to perceptions of attractiveness (e.g., physique, hair, eye color). For example, someone who is perceived as attractive, due in part to physical traits, may be more likely to be perceived as kind or intelligent. The role of attractiveness in producing the halo effect has been illustrated through a number of studies. Recent research, for example, has revealed that attractiveness may affect perceptions tied to life success and personality.[43] In this study, attractiveness was correlated with weight, indicating that attractiveness itself may be influenced by various specific traits.
IMO, this premium or effect is nothing more than another of many irrational injustices that permeate our contemporary culture, so I agree with your advice of not falling for it when it comes to cryptocurrencies either.