How does this contribution differentiate from https://arxiv.org/abs/1604.01383 https://arxiv.org/abs/1604.01383? This work just seems way too early + applying q

How does this contribution differentiate from https://arxiv.org/abs/1604.01383 https://arxiv.org/abs/1604.01383? This work just seems way too early + applying quantum-safe crypto to existing Bitcoin ECDSA seems like an easier and more practical solution.