From someone who does a lot of outreach at FPOA (its been a while) and at local parks.
I have worked with a lot of high school and junior college age young adults. My initial reaction to the cell phones glued to their face was initially very negative. Then, as I stopped judging and started seeing, I realized the way they see and process information is totally different than the way I and others my age did. (I am not quite as old as moon rocks , , yet.)
These young adults are centered on technology, and the smart phone is front and center to their experiences in life. At the same time they are engaged, very much so, in the topic of conversation at hand. The cell phones are being used to share the experience via live chats and through posts to social media, and at the same time they are present to face to face conversations (quite a skill!) Heck, they are super sharers!
At start parties I try and engage by asking astro related questions and am amazed at how much some of these "kids" know. I often let the young adults take over operation of my 12" push-to dob, and they are thrilled to use the telrad and put an object in the eyepiece!
Yes many want to hold a cell phone up to the eyepiece and for that I steer them to a friends with heavy mounts and an SCT (better at staying on target while being bumped around) who also love cell phone eyepiece photo's. On occasion they end up with a great photo!