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Confirmation from Pires's own Instagram account. The cut between 1:16-1:17 had the show's typical animation in its place (for a contrasting joke), so it was edited out on my behalf.
I love the guest animators on gumball, I love when guest animators aren't afraid to get weird with the style when its a more cartoony show
The best guest animation on Gumball.
https://twitter.com/jeremy_pires/status/1685635440290717697

I spent a lot of time working on the Amazing World Of Gumball, as an animator first on season 2, as a charadesigner on all the season until the end. As a goodbye gift, I was given my own little special sequence on "The Drama" and they allowed me to go all in 🔥 I had fun adapting the designs and was free to go crazy with the shots. Good old memories with my friend Jonathan Djob Nkondo who helped me animate this fun sequence.
https://twitter.com/jeremy_pires/status/1685680007677427712

Not so much FLCL, but Mind Game and Masaki Yuasa were definitely strong references and inspirations for this