Well, they're completely different, but other than that they have similar looking names. I think elixir is more useful for the ways I interact with the Linux kernel. This is attempting to be more of a teaching book. The links to function definitions is what makes elixir useful, and this doesn't have those.

The Elixir cross referencer does not have any special features to help you learn

Elixir is a great tool for exploring and cross-referencing the Linux codebase but for a new person, Linux can come across as very intimidating and complicated. The above explorer makes it very interesting to explore the codebase. This is kind of like an interactive book on Linux internals, with every topic being referenced through code.

Look at the content in the right sidebar, this is like an interactive guide to the kernel.

Even if it was the same, how problematic would it be ?

I don't see all those versions, and for some reasons my fans turned on with the elixir link lol

It's a better navigation and overall quicker way to read code