Apple does not limit minimal version of iOS during the submission process - which is a signal that this version is supported.

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.