I was keen to try this. I am running Linux Trixie and the readme has instructions for Linux, so I gave it a go.
While the finished product might be less than 500kb, after I installed git LFS support, cloning the repository downloaded over 5GB of large files.
Then the build completed without errors but the test failed because it couldn't find required data files. Some of the missing files were in the test-assets directory in the root of the repo, so I ran the test from there, but then it reported errors indicating it couldn't find models and couldn't create a recognizer, but then reported SUCCESS! despite the errors.
It doesn't give me much confidence. Maybe it works on android or ios, but it doesn't work as documented on Linux.