Yes.
A lot of parents care more about "raising a child with both parents" instead of getting their kids out of a fucked up environment and starting a better life.
My mum is like that. Its more important for her that "her kids have a dad" than her kids not growing up to be fucked up.
Often thats also just an excuse because they are afriad to start on their own and are dependent on their abusive partner.
Its almost impossible that no outside party gets to know about it because its so obvious at some point. But people mostly dont even know what to do and decide its the affected families business first and foremost. So in a way all of society knows, but most cases never get dealt with. And then it becomes a neverending vicious circle.
For a child thats the kind of scars that will never ever disappear until the day we die.
You can get over certain stuff if they happened in your later years. But if you live in an environment like this from your earliest years of development you are basically fucked.
Also literal beatings are being seen as justified measures because they are quick and seen as effective. In reality they just dont fucking know how to tackle the issue in depth, find appropriate measures and emotional reactions and take their time and teach their kinds life lessons in a humanly way.
I strongly believe that if your kid isnt a psychopath or something and you have had built up a strong emotional connection with your child its practically impossible to lose control of them to the point where you have to resort to physical and mental violence. If you had nurtured a trusting relationship with your child and if they maybe even see you as their friend, they will listen to you in the end no matter what (if your worldview is completely off then maybe not but thats another case).
And not every mistake should be seen as the end of the world. If you never make a mistake in your life and if you never fall, then you will never learn good from bad, right from wrong and you wont be able to grow.
Abuse is still normalised because a mindset like that still isnt even close to being the norm. A lot of parents still think they need to guide their kids the harsh way because the "real world is even harsher" and a lot of parents even think they basically own their kids.