Thats not too surprising as most web developers are JS developers. I'm sure JS will stay dominant at least a while longer, but in the .NET world Blazor is quite popular as far as web frameworks go. I imagine it will keep gaining popularity.

Not really, most of my .NET project assignments use Angular/React with .NET MVC/Minimal APIs.

Additionally Blazor is a bad fit for .NET CMS and commerce platforms, none of them supports it for rendering components.