Did you even watch the video? iPhonedo tested with and without the instagram update as well as 17.0.3
Problem was Instagram, not iOS.
One piece of advise I can give; do not try to replicate your android experience on iOS. More than likely it will leave you frustrated. Make the switch with an open mind to a new way of doing things and you will have a much better time.
Yes, the 2nd gen pairs and charges while magnetically attached.