I think they did this to promote Splatoon.
The New York Times
 @nytimes
6 May 2021
A town in Japan spent $230,000 in Covid relief funds on a 43-foot squid statue. nyti.ms/3xKUfvj
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Replying to @Reggie
They did it buddy. Squids are finally real.

May 6, 2021 · 4:27 PM UTC

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Replying to @CiblesGD @Reggie
squids were real
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This is the best tweet lol
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squids ARE real