How do you exactly define a single person's style vs a genre? While any artist might specialize, as is the case here, in a single style and distill it and creat

How do you exactly define a single person's style vs a genre? While any artist might specialize, as is the case here, in a single style and distill it and create a large body of work in the specific style, do you think no one before created a similar work of art in the same style? Naming a recognizable artist is the current "lazy" way of doing this instead of naming every possible visual style; and sure we could ban name and surname, but should an artist own "dreamy flat pastel colored illustrations of cities of characters with high contrast, no lines, children illustrations" for perpetuity? Definitely not, for the style itself there's likely hundreds of artists that have done something similar before and after.