The electronic devices are neither good nor bad in themselves, and their ability to make our lives easier depends entirely on the use we make of them.
1. Electronic devices have varying degrees of embodied energy and resource usage - it is incumbent on the end user to justify that usage
2. Electronic devices are designed as attention-sucking devices for selling advertising, and as such, have more negative uses than positive, which makes controlling them as an end user more difficult.
"Ease of communication" - I now consider that a downside. I don't want to be distracted by the possibility of getting a notification at any second, with information of any level of severity.
"Develop profitable businesses" - yes, there is a lot of money to be made selling people shiny things.