I don't entirely know how to word this but...
Yes, there are people out there who had good parents, who were difficult kids to raise. There are people who grew up hating the advice their parents gave, and then realized over the course of growing up that their parents were right.
There do exist members of the population were wrong as kids, who learned better, and have a good relationship with their parents as adults.
It's hard growing up. You're learning to be an entire person and a lot of times, even if the circumstances are perfect, relationships can be strained due to influences outside of anyone's control, and kids can blame their parents for things that aren't their parents fault.
Those people, who had good parents but had difficulties growing up...don't always realize that their experience isn't universal.
So, when they meet an abuse victim who is talking about their abuse or who has mentioned cutting off contact with their family, it tends to be their own experiences they draw from.
So they'll give advice like, "did you try talking to them," or, "but they're only looking out for you," or even, "but they're your family!"
Not because it's the right advice for you, but because it's the advice they would give to themselves.
They remember a time when they were furious with their parents over something they(the child) was in the wrong for, and they project that onto you.
They produce a solution to the wrong problem. They assume your situation is like theirs.
Made worse by the fact that a lot of people just straight up don't want to think about the fact that abuse exists so they tend to reject the possibility.
And it is frustrating, to be talking about something we've suffered only to have the other person take our parent's side without really understanding the situation.
But it's important to know that...they don't understand the situation.
Which means that their advice doesn't neccesarily apply.
Not everyone who is well meaning has good advice.
And...I don't know. There are also people who were abused who have internalized it in such a way that they think what happened to them is fine and that this is just normal. It's hard to tell the difference sometimes.
Human experience is vast and varied and there are a number of reasons I've been given bad advice and some of it was simply that the person I was talking to has such a widely different experience than I've had that they just...don't get it, and won't get it, and no amount of words I could say would express to them where the gap is.