I’ve worked at a lot of different places and in my experience it varies a lot.

Some bosses cut everybody slack. Some bosses are jerks and cut nobody any slack. I would say most of them play favorites with their employees (some are blatant about it, some are more subtle). Some bosses cut the workers with kids more slack. Some bosses cut the workers with kids less slack.

Anecdotal evidence is like that. It’s emotionally compelling, but doesn’t really tell us what’s going on in the bigger picture.