OP didn’t „not recommend“ the project but said

> so I'd recommend against using anything too fancy for real world barcodes.

That’s completely correct and doesn’t speak against the whole project but only against the „too fancy“ styles offered.

You sound personally involved. Your comment is the one being downvoted, because the hubris of "it works for me so everyone should be using it!" is absurd. The fact is many of the QR codes shown do not in fact work on many devices. Your use of all-caps also violates HN rules.