A Linked In profile page doesn't prove that the app exists. What effort does that represent to upload a 5mn video of the app in action on Youtube so that we can see it's real?

I'm sorry to hear that this reaction is killing the excitement, but you and future posters have to understand that Steem is as much a fundraising venue as a social media place, and that accordingly a minimum standard of authentication is required when making significant announcements likely to lead to large payouts like this is the case here.