I'm not sure if there's any official policy around this, but to me it seems that lists often get a less-stringent treatment than other article types on Wikipedia.
Here's a sampling of some other interesting list articles:
Personally I'm a Wikipedia maximalist, it should record everything. They seem to have decided on a different path, partly on notability grounds, partly on the basis that its done elsewhere. That's fine as far as it goes but be consistent.
Lists make sense in a lot of contexts, lists of songs, albums, monarchs great. List of 'best' songs, 'greatest' monarchs, 'emerging' technologies, less so.
Here's a sampling of some other interesting list articles:
- https://en.wikipedia.org/wiki/List_of_unusual_deaths
- https://en.wikipedia.org/wiki/List_of_films_considered_the_w...
- https://en.wikipedia.org/wiki/List_of_ballooning_accidents
- https://en.wikipedia.org/wiki/Lists_of_deities_by_cultural_s...
- https://en.wikipedia.org/wiki/List_of_fictional_colors
- https://en.wikipedia.org/wiki/Lists_of_bisexual_people
- https://en.wikipedia.org/wiki/List_of_road_junctions_in_the_...
- https://en.wikipedia.org/wiki/Lists_of_websites
- https://en.wikipedia.org/wiki/List_of_sports_teams_nicknamed...
- https://en.wikipedia.org/wiki/List_of_buns
- https://en.wikipedia.org/wiki/List_of_wolves
- https://en.wikipedia.org/wiki/List_of_brand_name_condiments
And the all-time best:
- https://en.wikipedia.org/wiki/List_of_lists_of_lists
I, for one, am happy these exist, despite the editorialization, etc.