If the question is really about "can", than the answer is definitely yes.
If it's about if you should, than it's a clear no. Because storing data in a GitHub Project is not the use case. Nothing in the protocols or the platform itself is optimized for that. Also GitHub could just pull the plug of your project if they ever feel that it is against their terms.


Yes... but how do we get this (basic) understanding to millions of people lacking it?