Because that would likely cost money, asking on SO costs literally nothing... And surely all appropriate expertise either read SO or their blog, so no problems here!
To be fair, I see nothing obviously wrong with their solution, it's their approach that concerns me.
When I work with Faculty (teaching or research, tenured or not), they are very conscious of their image/reputation. It would look pretty bad for a researcher to "sign off" on something, only for flaws to be discovered.
> It would look pretty bad for a researcher to "sign off" on something, only for flaws to be discovered.
True, but there is a big difference between "Hey, I'm using your stuff, could you look at this and see if I did something stupid?" and "I want you to sign off on this publicly. Here is the contract."
To be fair, I see nothing obviously wrong with their solution, it's their approach that concerns me.