Your view on relationships being toxic and outdated is simply your opinion, there really isn't anything inherently correct or incorrect about it. Yes, some relationships are very much toxic and yes in some cases people's views on relationships are a bit outdated, but that doesn't mean we can make a sweeping generalization about all relationships from this.
This is where we disagree. An opinion can be wrong if it goes against reality. For example if your opinion is the earth is flat, then your opinion is wrong.
I'm basing my opinion on everything I have seen and experienced in life. So there is no room for me to be wrong. Having said that, I've written some stuff in this thread about the benefits of solitude that are less than fact based and might actually be wrong.