The front page literally goes through the features of blender, with screenshots and descriptions of features:
"Modeling, Sculpt, UV
Blender’s comprehensive array of modeling tools make creating, transforming and editing your models a breeze.
· Full N-Gon support
· Edge slide, inset, grid and bridge fill, and more
· Advanced sculpting tools and brushes
· Multi-resolution and Dynamic subdivision
· 3D painting with textured brushes and masking
· Python scripting for custom tools and add-ons"
not sure what else they could need, it does exactly what you're asking for.
There's lots of articles posted to HN concerning specific topics, tools, etc... Not everything needs to be explained upfront, you can do your own research.
In this case, a simple click on the Blender icon goes to their homepage, which explains it's 3D modelling software.
Take a look at IanHubert's lazy blender tutorials: https://youtu.be/JjnyapZ_P-g. They're a minute long each, so not useful as tutorials. But they do a good job of showing generally what Blender can do, and how an experienced artist approaches solving a particular problem.
I was confused when I first encountered it too. It does so much that I was left wondering if it is for digital animators, for 3D-printer artists? 2D art?
It turns out all those types use it (but I believe it started out for digital animators primarily).
I wandered around the website provided in the link above, but didn't find a simple explanation as to what Blender is about.
Perhaps adding such an explanation to the website can be useful.