souls pvp is kinda neat in theory when you expect and accept that everyone is gonna do whatever they want. When you start trying to enforce social rules, you're a massive fag. This goes to both invaders and the invaded.
If you invade and complain about the host running from you or summoning someone to help them, you're a faggot.
Why wouldn't the host try to avoid the fight or gain as much of an advantage as possible? you're trying to kill him.
Similarly, if you complain about an invader preventing healing with lloyds or using some weird build to kill your gank squad, you're also a faggot. Of course hes gonna do whatever it takes to kill you. Hes trying to kill you.