He's definitely not a scammer. This game was a side project for a long time as he was remaking his other game (Big Long Complex). I'm a member of the Small Complex Discord server and the dev posts fairly regularly with updates/answers questions. The game engine he uses is apparently notoriously difficult to work with.
I'm on the Discord too. BLC didn't do the remake alone, someone else did the scenes. I don't know how difficult it is to use RPG Bakin, but he said it has pre-programmed nodes and stuff, with optional coding. As I said in previous replies, he said the update would be released before 2026, but three months have passed and he still can't give us a release date or even an estimate.