Use whatever app or medium you choose, my advice was simply that sending directly to specific people is a better than flooding your IG or FB with photos of junior every day.
The connection via Facebook is so trivial and transient but it is better than no connection to people I'd have no contact with otherwise.
The people I email photos too will probably look at them a few times and may want to print them and will send an email response. Via FB it's all seen and then forgotten in 30s
For me to send a birthday card to my friends I have a reminder that goes off a week before their birthday so that I find the time to go out get a relevant card. Then writing something of purpose inside the card and sending it with enough time to get there. So it's a week's worth of remembering their birthday vs the 30s that occurs in FB before reading all the other news.
So not worthless, but certainly worth less, to almost zero.