The reference is that the anime character "Naruto"[0] wears the same colors and roughly the same uniform as a Japanese recovery worker[1].

During disaster work, you see swarms of recovery workers and the joke/reference being made is that this looks like Naruto doing a "shadow clone" technique.

[0] https://i.redd.it/psseu93j62la1.jpg [1] https://sendai-resilience.jp/media/images/efforts/case31_ima...

It took a while, but finally someone managed to get us confused westerners an answer! Thank you :)