It’s really just Mastermind with letters instead of colors. And they didn’t even create Wordle either, they bought it from the original creator and tried to lock it up behind a paywall. I still sometimes get told I have to subscribe to play. I’ve mostly given up on it because it’s lost it’s appeal for me anyway.
If I had to guess, it sounds like a bunch of indie developers might be pooling resources into a collaborative studio or publisher or something.