I always think this is such an odd sentiment. That 1% builds 100% of the software for the other 99%. Doesn't that make them disproportionately more important?
Liking using something is a bit different than having to use something. Are you saying you don't think the majority of developers need to use the command line for things like git, npm/general dependency management, running local web servers, compiling apps, continuous integration, etc...?
Again, I'm not talking about what's more powerful, and I'm not saying that everyone works this way, but I am suggesting the majority of developers do need the command line to do their job.
Unfortunately, I'm not aware of any usage statistics for the command line in isolation. But if you look at the most popular technologies, e.g., Node[2], then you can most likely extrapolate that the majority of developers are working with the command line.