I'm one of the biggest defenders of this series and find it greatly misunderstood. For me, it was like watching something you would find in avant-garde cinema. Not necessarily from an experimentation standpoint, but in the sense of trying to piece the narrative together e.g., something like Inland Empire or Last Year at Marienbad. It was such a perplexing and challenging experience. This only added to my appreciation for it.
The messy politics, confusing human relations, lore, characters, and sprawl of it all was fascinating for me to unpack. Each episode is dense with thematic exploration and plot movement. You cannot watch this with your brain on autopilot mode. This series makes you work to understand it all because you won't get any info bumping from the director.
G Reco is also Tomino at his most auteur, so you're either along for the ride or not. It is uncompromising and refuses to appeal to modern anime storytelling conventions. I see Gundam Reconguista as the Gundam series for the diehard Tomino fans. If his style was never for you, don't rely on this series to make you a fan of his work.
It is also quite postmodern in places because I get impression Tomino is providing meta-commentary on the franchise and fanbase throughout the work. It's not overt commentary or anything which makes it more meaningful when you find it. Turn A Gundam was getting at similar metatextual themes which makes sense when you consider the relationship the two series have together. I also appreciated how this series was like something you would've seen in the 1980s only with modern animation, so that's probably not very appealing to newer Gundam fans. All-in-all, it's not for everyone, but it was certainly for me. I think it's a masterpiece and one of the great Gundam series.