I see your 2 cents and raise you 2!
I hear what you say, but I don't agree fully. You're right in saying you shouldn't be too focused on specific moves or techniques as such, but taking someone's back who hasn't got game is pretty simple, especially if it goes to the ground. If you sink your hooks in, and trap one or both his arms, no way he's gonna go anywhere near your nuts and besides if the choke is properly applied, I can promise you he'll be too busy trying to stay concious to think about grabbing anything, the choke just works too quickly.
If it stays upright, and you've applied it properly, there is also no way he should be able to grab your crotch. I know things happen very fast iin a street situation, but that's why you spar - so get the choke applied and crank him back and down...stick your butt out, bending as low in your back as you can, and if he's really tryting to grab you (which 9 out of 10 won't, they'll be too busy looking at the pretty flashing lights and tweety birds) you start banging knees into his coccyx, his buttocks or the back of his legs...that'll destroy his base and chances are he'll fall back ino you or just sag/collapse...then crank the choke again.
I'm not saying I'll always use these techniques, but they do work very well in a street situation...besides, I'd rather clinch or grapple with an unknown opponent than trade punches...one lucky shot lands and even the best fighter can get knocked out.
You can tell within the first shove or punch whether the guy knows his stuff or not, so sure, if the guys a total bum you can stand up with him and give him a boxing lesson, but why take the risk?'Lastly, the choke is a 'non-lethal' submission, you never know how badly you could hurt someone with knees, fists or elbows, and you don't wanna land up in trouble because some drunk asshole started a fight.