I think you are right that this paper may not amount to anything but it should also be a big wakeup call that maybe we need to switch or enhance our public key

I think you are right that this paper may not amount to anything but it should also be a big wakeup call that maybe we need to switch or enhance our public key crypto starting now rather than later, in case similar ideas can work, or in case quantum computers get a little bit better faster than we thought, etc.