It’s a big step. If nothing else, it’s a very difficult problem, and so the fact that a computer can do it is a significant milestone for how good computers are getting.
As for practical biological application, as I understand it, the real holy grail is to solve the problem in the other direction: Given a desired shape for the finished protein, come up with an amino acid sequence that will fold into that shape. That would enable the rapid development of all sorts of drugs, because most drugs work the way they do because they have the right shape for something-or-other.
Now, once you’ve solved the problem of finding what shape a sequence makes, you can brute-force this problem, just by making a bunch of random sequences until you find one that has the right shape. But that’s likely to be slower than you want. Though on the bright side, if everyone doing this shares their data, then even the shapes that aren’t useful for you might be useful for someone else.