In any case, the title is "large media brands" so urls like "nytimes.com" and "washingtonpost.com" are consistent with that theme but the "blocked_domains.txt" also has "apple.com" and "microsoft.com" which are not media publications. If the motivation was avoiding SEO spam when searching for reviews of "air purifiers", domains from non-media-publishers like Apple.com and Microsoft.com are not part of that problem.
If instead the author is really trying to block "any big companies" rather than just "big media", it seems other giant non-media companies like NVIDIA, Toyota, JPMorgan, etc would also be on there.