Condolences to the author, but this is a huge relief. A polytime quantum algorithm for LWE would have been a scary prospect for the future of asymmetric key crypto. (Not to mention all the other cool stuff people are building on top like fully homomorphic encryption.) Even if it wasn't quite fast enough to break the current schemes that NIST is standardizing, I (and I'm sure many others) would much prefer those problems to stay in exptime.