You're embarrassing yourself

iOS 10.1.1 just came out, most people probably haven't even installed it yet so it's unlikely you would know if Era users were experiencing the same problem or not

"Starting in iOS 10.1, Apple is reinstating the warning message, with a more dire alert that will likely steer customers away from apps that have not complied with Apple's 2015 mandate stating all apps must be 64-bit. As can be seen in the alert below, the message now warns that an app "may slow down your iPhone." It goes on to say "The developer of this app needs to update it to improve its compatibility." "

It has everything to do with the actual app being outdated