It's important to remember that these are the films that have been influential on English-speaking Wikipedia editors. 75% of editors are under 30, 90% are male. 76% of edits are to the English Wikipedia. I couldn't find any numbers but I believe there's a similar bias towards white Americans, simply based on the demographics of the US, UK, Australia, NZ, and Canada.
Influential films for white male Americans under 30 that also choose to edit Wikipedia? Sure.
To be clear, I thought this was an interesting technique and visualization. I like that it's influence by year instead of the top 100 influential films of all time, with Citizen Kane at the top.