You're not entirely wrong. Removing the rule would make it so everyone who does have video evidence can post it again cause they won't get themselves or their friends banned who already don't give a shit about the rule and actively metagame knowing there is no way to prove it without said evidence. Those who've been in this community long enough know video evidence doesn't just disappear or doesn't exist a majority of the time.
But for the sake of being on topic, some situations are simply easier to talk about, nor worth holding a grudge about. For the most part, people will be understanding and are willing to talk out any given situation. If people are good in PM's and understand the situation and the grievances, why bother with a report? At that point you're just being petty. Though, I will admit, there are some instances in the past that were just straight to report for me. Though I don't prefer to report anyone, I'm not afraid to do it either.