This finding recently made a big splash at AChemS 2021 (the annual meeting for the Association for Chemoreception Sciences). And it actually is a really big deal. A protein structure is extremely information rich, telling you where all of the atoms of a given protein are (ish). Before this finding, there were NO structures of any olfactory receptor, and historically the publication of the first structure of a given biomolecule has been a watershed moment for that field (insulin, ribosome, many other examples).
What's more, they used the structural information to rationally engineer their olfactory receptor, expanding the binding pocket and changing how the receptor responds to different odorants. That was pretty much impossible to do before this. So, this is a pretty huge finding, and will definitely encourage more structural work on olfactory receptors in the future.
If I had to poke a hole in this finding, it would be that insect olfactory receptors are substantially different from mammalian olfactory receptors. But in my opinion, it seems that the buzz about this paper is definitely justified. Very cool!