Indeed there are many rating systems where '1' is 'best', 'first-in-rank', 'most-preferred'.
I've never seen an online 'stars' system that works that way... but it's possible in some other cultural context a single star is somehow honored more than many, and thus without explanation the star-system could be misinterpreted. (Of course the comments here strongly suggest that's not a factor in this case.)
I am from Turkey and no, 1 star is still 1 star here. It is not a cultural mistake, it is just the people in example are being narcissistic and trying to show off
I've never seen an online 'stars' system that works that way... but it's possible in some other cultural context a single star is somehow honored more than many, and thus without explanation the star-system could be misinterpreted. (Of course the comments here strongly suggest that's not a factor in this case.)