Curious what the use cases for iOS 10 are? This isn't a criticism of your comment but more just wanting to learn why a user might still be using iOS 10?
By removing the debugging ability it's almost pushing the responsibility onto publishers/developers to say "hey, we don't support iOS 10 anymore - we are these bad guys".
In a case when we would like to provide the best possible experience to all players (even if the market share is less than 1%) - I consider as a regression, an unnecessary change and complication.