That was kind of the point. It was a loving rib at the super robots genre and is not to ever be taken entirely seriously.
As silly as Gurren is for most of the show one of the things I loved about it is that there was actually a semi-serious part of the series. The underlying plot of the show is about Simon coming of age and becoming a man. He goes from literally running away from his problems by burrowing underground to growing a massive pair and facing everything head on. It was like Anno was saying "Sorry for making Shinji such a pussy, here's a character that starts out like Shinji but grows the fuck up."
Gainax has always had problems finishing: look at Evangelion as a prime example.
Pfft. Gunbuster. Our final battle is just the storyboards for said battle.
Oh yea, Squirrel, you might be interested in this. So, it turns out the Code Geass IP is coming back to life again. I saw Gurren Lagann: Lelouch of the Ressurection in theaters, which is actually the 4th new movie. They came out with 3 movies which were basically retelling the TV series. There's apparently a 10 year plan for the franchise although they haven't said what's coming next.
https://www.crunchyroll.com/anime-news/2019/05/05-1/code-geass-creators-unveil-10-year-plan-for-seriesSo, my spoilerish review of the Code Geass movie.It was... okay. Didn't exactly feel worth the $12 I spent to see it. The movie was missing something. I would say that one of the things that made Code Geass entertaining, besides the Sunrise-style giant robot action, was all the plot twists and shocking events and of course Lelouch spending half the series laughing like a literal madman. The movie had none of this, really. If anything, the entire movie felt like it had two purposes, really: Explain how Lelouch comes back to life, and be fanservice for the fans, and it did both. Fanservice especially, as just about every character from the original series shows up, even for a split second, and at the end both Lancelot Albion and Flying Guren show up.
Speaking of fanservice, I was shocked and confused to see Shirley alive. It seems that in the movie remakes that she never dies like she did in the series. And this bugs the hell out of me, because her death was a major thing in the series, a serious emotional scene. And to just, gloss over that and have her alive and well is kinda annoying.
Another thing that bothered me was the Geass of the main villain. It's been pretty established that Geass powers seem to be telepathic or psychic in nature, as every single one of them affects the brain in some way. Lelouch allows him to control minds, Mao's allows him to read minds, Rolo's allows him to cause people to freeze up for a short period, and Charles' causes memories to be erased or replaced. However, the villain in this movie has a geass that allows her to travel 6 hours back in time. Which has nothing to do with the brain. So yea.
The movie I saw was dubbed and the first time I've seen the dub. I'd say that Lelouch is better in Japanese, he has quite the deep voice. But in the dub it's Johnny Yong Bosch, and he voices Lelouch with a much softer voice. Doesn't have the same bite and egotistical commanding voice that the Japanese voice has.