As far as I can see here, the original situation was someone pointing out a bug in the code in the WiP thread, not a different forum. At least, there’s no mention of that.
And that’s pretty much what testing threads are for. I don’t understand what purpose is served by hiding code from testers; it’s making it harder for them to help you. That is what I am speaking to.
It’s also worth noting that compiled code, unless something has changed, just adds an additional hurdle to reading it. (See here.) If you don’t want someone reading your choicescript code, don’t post your choicescript game. The code is part of the package deal. That’s what posting a game for testing means.
Note also that, for a published game, the code outside the demo is inaccessible unless you’re logged in, so it’s only visible if you paid for it. Which makes sense; it’s part of the deal too, but it isn’t for everyone else.