The result from the experiment is not surprising and it has been done in less stringent fashion many times before. It is just a real-world realization of the though experiment behind Einstein's spooky action at a distance (look up Bell measurements / Bell experiment / EPR "paradox").

This gives you way more obfuscated information than you probably want: https://en.wikipedia.org/wiki/Bell_test_experiments

Basically, if you set up an experiment where two entangled particles are send far apart and you are not very careful with the derivations, it would look like you can communicate faster than light between the two entities holding the two particles. Turns out that it does not work, and while it does give fascinating insights about the weirdness of quantum mechanics it is not useful for FTL communication.

However, it is definitely useful for encrypting messages that can not be decrypted no matter how much computational power you have (even if you have fancy computational oracles).