Leads me to the conclusion that I don't know what JuryNow is for. The post says it's a game but it's not really. I think that people will use it 'fo real'. But think about a real jury. Typically you will be excused from a jury if you are an expert in a specific field that is important to the case, or if you have a conflict of interest. The jury must be a bit of a blank slate so that both prosecution and defence can give them the facts pertaining to the case, question witnesses, call experts to give testimony when pertinent and then let the jury deliberate together on the result.

If these JuryNow questions are just a snap judgement on a one-shot question, with no opportunity for depth or deliberation between members, then I can see all sorts of potential problems, including the one you pointed out. The person asking the question can also load it in such a way that it leans towards their chosen answer (somewhat like loaded surveys with leading questions). I can certainly see it being used that way in toxic online debates, like a cheap mini survey that gives credence to some opinion. Aren't Reddit "CMV" and "AITA" even a little better since the jury can deliberate with each other online, as would happen in a real case?