Because though there might be building trades conferences, there are no hammer conferences. Oh, there will be tool vendors at the building trades conferences, there might be sessions on "Efficient Hammering Techniques Using Machine Learning", but there are no conferences about hammers. Don't forget about the blacksmith conference next week, they'll have hammer vendors, too.
I dunno, a Ruby conference kinda makes sense because one will mostly build web sites with it, so it's really going to be a "Building $FOO with $TOOL" kind of thing. But C is so widely used, it's like having that HammerFest 2019 with everyone from people splitting wood with a sledghammer to jewelers with their teensy little tapping tools. I just don't see the diamond workers drinking with the lumberjacks at the hotel bar after hours. :-) I jest, but it's mostly about networking anyway, otherwise just watch the videos online.
I dunno, a Ruby conference kinda makes sense because one will mostly build web sites with it, so it's really going to be a "Building $FOO with $TOOL" kind of thing. But C is so widely used, it's like having that HammerFest 2019 with everyone from people splitting wood with a sledghammer to jewelers with their teensy little tapping tools. I just don't see the diamond workers drinking with the lumberjacks at the hotel bar after hours. :-) I jest, but it's mostly about networking anyway, otherwise just watch the videos online.