I don't know, I'm in two minds.
On one hand I can understand not wanting the phone to go off during that moment when all is quiet and you're at last able to have that cup of tea or whatever with your partner without kids, and before you think about going to bed/ out to work again.
On the other, some people may be lonely at that time, if they are a lone parent, or their partner is away or working nights, and want to chat about their day, or want to hear how their grand kids are.
For myself, I text at that time and rarely if ever call. I Skype at pre arranged times.
I wouldn't tell anyone of a death at night. Best call in the morning- unless they have to arrange flights, and it makes sense in their time zone to call.
On the phone all day, by eveningtime im talked out. I love my quiet time with dh MN! And a good book of course.