Just a guess, but probably because the "context" for comment is asinine.
Google is not under any obligation to care about what you think they should care about, and whining about it just makes you look like a "snowflake".
If Google's failure to fetishize the tragedy of 16 years ago upsets you, you are free to use Bing, or another search engine.
Whether the context is asinine in your opinion is immaterial to my point. Doofus asserted that there was no point to it but there was in fact.
And google is under a general obligation to support its users and to provide the public with a consistent and objective service or else go the **** out of business, which they would if they had any competition.
What Google needs to have done is to have its virtual monopoly broken up by government action, but that wont happen since they kiss the libtard Establishments ass, as your comment proves.