It's just that putting out an anime with the intention of copying Snk is risky to say the least. The truth is as you say I had no idea of the existence of this title, reading you is the first time I see it and from what you say it's pretty good. I watched all of Shingeki so I'm more interested in watching this anime because of the similarities you mention. We'll see...
Cheersss!
As such, it is not a copy but merely draws inspiration from certain elements. Similarities are only evident in the first two chapters; thereafter, it diverges significantly and follows its own unique trajectory that bears no relation to SnK. It’s regrettable that this anime has been technically overlooked due to persistent claims by SnK fans that it was a mere imitation, leading to its significant undervaluation. Nonetheless, I encourage you to watch it, as it is truly excellent.