I totally agree with you most especially on this last part, there are absolutely no outlined rules that have proven to work effectively in the crypto trading environment, every one has different strategies and standards of trading, so also, it is advisable for each to make his or her own rules in a way that it will suit or match he's or her trading strategy.
Rules are very important most especially in the financial sector, not keeping them can sometimes result to devastating loss of money, so  traders should pay attention and learn the strategies that works, make and keep rules that will help them maximize profit.