A study conducted by a broadband internet research group has found that millennials are more likely to develop anxiety at the thought of a voice-call compared to boomers. 50% of the former group also reported getting their parents to make doctor's appointments over the phone for them. However, this aversion abates in those aged 35 or older.
https://www.notebookcheck.net/Phone-calls-what-are-those-Most-US-millennials-are-found-to-be-more-comfortable-with-texting.459437.0.html
Newer were able to make calls son I put money it was gone. I hate it.
Pointless article
Well, the data also indicates that the "younger set" do prefer to interact directly via text/chatting. However, they are very "shakey" when interacting face-to-face and in real-time.
So, having a real conversation with a millennial via phone, conference call, or on video chat will seem rough due to them NOT feeling comfortable with real-time interaction and actually responding to facial expressions & body language.
They'd rather have a Meme tell them what a photo or video means rather than be critical for themselves.