Bro... did you even play the game?
And this "update" is an upload of a fix released in 2022. No, it didn't complete the game.
And there aren't nor will there be updates after this. They released a broken game, riddled with placeholders - simple as.
...and then lost the know-how on how to repair it.
People really do pick the weirdest fights online.
Yeah, I did, I even bought it from the dlsite and kept up to date with Monster-ken's cien to know they had more or less marked the game as completed (as in no longer working on it). Still waiting for the additional scenes in Coward's Treasure... yeah...
Releasing broken games, riddled with placeholders or missing content is also as old as sin when it comes to video games. Heck, even AAA companies who go ahead and remaster games still don't "complete" the content (i.e. Romancing Saga - Minstrel's Tale).
And even if what you've written explains what you meant, you were incredibly vague in your original comment and sounding like a NIMBY who doesn't like updates/patches for older games.