For the consumer it's a simple switch(arch) statement to download the right binary.

But for the developer, it means setting up 9 different build pipelines and artifacts (and realistically, most won't bother with BSD builds and a lot still don't bother with arm64 builds).

It's not necessarily a huge hurdle or an unbearable expense with modern CI services, but it's still a massive deal that this project can make it all unnecessary for every single C/C++ developer out there. If this were a paid product, literally millions of companies would be happy to pay a small fee to save on CI costs, time and maintenance.