Is using iOS’ 3D Touch in apps bad for usability?

Have there been any usability studies on iOS 3D/Force touch with less tech-savvy users? I've casually observed older people having issues with 3d touch using apps. They tend to press hard and long on screens which inadvertently triggers the 3d touch options as opposed to the primary action (like a tap to open). Engineers are advocating adding it our app but I'm worried it might confuse some of our older less savvy users.

OpenTable search result list is a particularly bad example of this.

Does anyone have thoughts?