It's not perfect or anything, but it feels like a release with very pure intentions and people seem to resonate with that. No micro transactions, no lootboxes, no DRM (not even Steam's is implemented), no release day DLC, fast hotfixing, and maybe with the promise of classic expansion packs. The sort of practices that people want to encourage, packaged with a formidable and generally well put together game.
When bigger, more corporate dev studios come out and give it free marketing by saying how unrealistic it is to make games like it... that's free, excellent publicity.