When does stern child rearing become emotive abuse?

So, say you are doing your own homework after a long days work, you come home each day and your kid says they did their homework. Apparently, it wasn’t done right and the person who is supposed to be watching the kids isn’t helping because they, too, have homework; so, everyone has homework, but the parent becomes upset and feels that using stern standardization and light material threats (no this and that) to persuade the child to work diligently and neatly (i.e. writing).

Meanwhile, it’s now after 7pm, the kid showers and makes their way back to finish their homework. It is 10pm now and the ranting of how the parent is tired of the child being lazy has not died off. The parent is fumed and informs the child that at 4am they will be getting up to finish their homework. It was so and now the environment is hostile.

My analysis is that the parent is overly stressed and the child is not paying attention in school to what they are teaching. The babysitter is not an innocent, but is neither to blame due to their restricted and limited role as a guardian. Do you feel that in the parent’s view, behaving in such a way is productive or nonproductive for the child? Granted, all people learn differently and their emotions play a significant role in motivation and learning. I also do not see it as abuse, but I do recognize it as being borderline.

What is your opinion on the matter? Do you have alternative solutions? Is this abuse or “tough love”?