Glad you are not trolling, sorry to have suspected that, but you just did three posts in a row to hammer down your opinion on a controversal topic spiced with a ton of external links, that's usually what trolls in this forum like to do.
Oh, there is a lot of toxic platonic relationships / toxic friendships, they just don't get as much attention as toxic relationships and are usually harder to spot. I've honestly gone through as much toxic friendships - maybe even more - than through toxic relationships, it's just that the impact feels smaller because people don't necessarily identify it as toxic friendships. Relationships get a lot more focus in the media in general because people tend to put much more stress on a relationship than on a friendship. If people put even half the expectations they want from a partner into a platonic friendships, I'm pretty sure even the best of friends might run. It all depends on what you expect from a partner and what you expect from a friend.
I don't deny that there is domestic violence, but domestic violence also happens a lot in families, so from that logic we should go friends > partner > family or something. Honestly, I don't even get why it's necessary to invent a ranking that does add so little and destroy so much - a romantic partner and my best friend actually take completely different "importance" spots in my life, my partner has always been also my friend and my friend like a lifelong partner to me and I really couldn't and wouldn't want to rank them in any way.
Abuse in romantic relationships is more often than in friendships, yes. Because it's generally considered easier to leave a friendship than a romantic relationship because the latter often comes with responsibilities like kids or shared living space. Domestic violence sure is awful but I don't think it would be fair to reduce romantic relationships on that because those can have a really amazing feel to them. With a partner you basically have a person that is "yours" - I don't mean this in a possessive, objectifying way, but the level of common involvement (shared decisions, corporal and emotional intimacy, living together) can be really great. I don't say it can't be that great with a best friend, but that's exactly my point: When I was still in a relationship, I loved both my partner and my best friend equally and they gave me two similar, but still different kind of love and live experiences. In my personal experience relationships become a lot like friendships if they go on, aside from the occasional intercourse, most couples I know are basically friends who are kissing. Not saying the kissing part is super important or something, but that's usually why people start relationships, because they want a personal friend who they want to kiss. I've seen and read several people say they want a "best friend" for a partner, so the border is really where both parties involved want to set it.
Point 3: Friends can't exactly "cheat" on you with other people, but .. they can (kind of) betray you. I had this happen just shortly ago when a friend of mine just decided to ditch me and my peers to find new peers to hang out with - which is basically like cheating, secretly ditching a person because you'd rather be with a different person. Friends can also lie, be illoyal or talk behind your back to steal someone's love for you, so I don't see that as much different than cheating.
