The main off topic reason (the generic one that every site has) currently reads this on this site:
This question does not appear to be about open source software, within the scope defined in the help center.
Why does it read this in the first place? As far as I can tell, the Area 51 proposal scoped this site so that it wasn't limited to just software - so why does the OT reason say it is?
Can we change it? It shouldn't mention anything about software, merely saying open source would be enough.