I wish people would stop comparing programming languages to Hammers. It's a meaningless meme. Yes, they are tools, but comparing them to Hammers is 100% ridiculous.
A language is not a hammer. It is a tool. You know what else are tools? Chainsaws, databases, lasers, and tunnel boring machines that cost tens of millions of dollars.
Calculus is a tool, but how we write it is just the notation. Similarly, computer programming (or perhaps a subfield like functional programming) is the tool, and a particular language is just the notation for writing it down.
A language is not a hammer. It is a tool. You know what else are tools? Chainsaws, databases, lasers, and tunnel boring machines that cost tens of millions of dollars.
There are plenty of conferences about tools.