No, but be mindful there are many kinds of friends of varying degrees of closeness. A distant friend might fit your description. A close friend could be more attentive.
Keep in mind that people are busy, have work, families, tragedies and dramas of their own. It isn't always easy to be responsive to the level your suggesting.
Also, Marshall McLuhan said "The medium is the message". Your complaint...
"I'm left on read for days, meetings are ignored, text message conversations just end abruptly until they get back from vacation....
Those are asynchronous mediums. They are meant to get back to you when convenient. If you wanted immediacy, have a phone call, visit in person. The medium (asynchronous written messages) is the message (you don't need to respond right away).
It is not reasonable to expect someone on vacation to be tied to you electronically. They are on vacation! Leave them alone until they come back. Then have your convo and spend time with your friend.
They tried this in the states, but they were riddled with bulletholes and cost too much to replace. They went back to real children, for economic and cultural reasons.
But they are idiots. A small part of me is happy any time they aren't, but this is really just pointless signalling by morons, for morons, about morons.
"the idea of being raised as child without any explanations about the world or comforts to be held, scares me."
What a strange thing to say. What makes you think atheists do this? I tell my children what we know about the world, and what we don't yet know. No need to make up anything short of Santa and the Tooth Fairy, but they grow out of this fast.
"Also, on the opposite of the spectrum, what happens when your child converts(?)"
I can only speak for myself, not atheists, but my kids are encouraged to make up their own minds. I take every opportunity to discuss religion and my kids even go to a catholic school. I consider it essential to understand history art and culture.
That said, they are very comfortable with atheism and they don't find any of religion comforting, quite the opposite. It's disturbing to them.
The secret is that the temperature underground is much cooler than surface temperatures. To take advantage of this, you dig a hole about 6 feet down, lie down flat, then pull the dirt back over yourself and fill the hole or have someone else do it for you.
Sex sells