Good..you haven't made any rational retorts to any of my assertions, you seem to just make up these arguments in your head and then argue them and then ask me why I don't get what crazy shit you talking about.
Let me make my point.
1. Training doesn't simulate every street scenario, but it does make you more prepared for ANY scenario than if you NEVER trained.
2. A guy with grappling or striking experience is going to have a BETTER chance in a street fight than a guy with NO experience.
3. A guy with GRAPPLING experience is going to usually be in a better position to apply / defend dirty tactics.
4. Not all dirty tactics work 100% of the time
5. Not all dirty tactics are easy to pull off
6. not all dirty tactics work on a person with adrenaline good enough to prevent your opponent from retaliating.
7. Everyone has equal opportunities to do dirty tactics or throw first punches...not everyone has equal training.
..There...that is as easy as I can make it for you.