If this exists then logically the inverse can be made …

I bet we wont be able to stop seeing them after reading this.

Because you'd need to re-educate hundreds of millions of people, and it's a pretty weak message: "this symbol of hatred and genocide has other meanings, too!"

... and you'll be playing into the hands of people who want to get a swastika tattoo and then pretend they didn't mean any harm by doing so.

Right on! I generated one the other day that said 'Oct7'. I'll put it on a hat for you if you like.

I guess one could rack through many QR Code parameters while encoding the same payload text: Version (40 sizes with capacity constraints), 4 error correction levels (with capacity constraints), 8 mask patterns, splitting text into various blocks (with capacity constraints), using different character encoding modes (if applicable to the text), putting garbage data after the terminator (violates the spec, but can be a huge boost for generating some custom patterns).

It isn't hurting Hindus to run code that ensures a QR code doesn't include that sequence of squares.

For the very obvious reason that the percentage of population aware of what the term Hakenkreuz means is literal orders of magnitude smaller than those familiar with the term Swastika?

I mean, feel free to run a "taking Swastika back" information campaign, but also, you know, good luck.