Has modern communications technology made it acceptable to ignore people?

I'd say modern technology has made ignoring people more common, but not necessarily acceptable. The main reason is that we're constantly bombarded with messages and notifications, which makes it easy to overlook some conversations unintentionally. For example, as a UI designer in Shanghai, I often get dozens of work messages daily through different apps - sometimes important personal texts from friends get buried under work chats. That being said, I still think it's important to respond when possible, like my math teacher Mr. Wang eventually did when he was less busy. Technology gives us excuses, but basic courtesy shouldn't disappear.