Just to offer another perspective: I think the way your website works right now is actually very nice and the person you’re replying to is wrong. When I go to godbolt.org, it similarly puts me on the screen where I actually want to be, as a person that wants to use that tool.

I think an “About” page or docs would greatly help people that want to know all of the features offered by the site, but I think the default of dropping you into the tool is ideal.