And I might be the only idiot here, but I tried to run stockfish from source and it was not an instant process. In addition, there isn't really a front end, you essentially end up with a CLI to input moves.
And for those who say, hey you, there are prebuilt binaries, just download them! Check out this message [1]
" The binaries at the top of the table are fastest, but may not support all CPUs. If you don't know which CPU you have, you can go down the list and pick the first binary that does not crash. "
Yeah okay, a pragmatic set of instructions that can't fail...
From this I think we could see why a product built on top of stockfish might make sense, even if the linked product might not do as such.