If they're larger opponents who aren't trained or aren't well trained, yeah, I've personally been witness to small dudes like MM handling bigger dudes. I'm not saying he's going to take on McGregor or RDA, but they aren't going to fight three weight classes up either, so I don't see your point.
Genki being a LW doesn't matter, the point of the example was that a little guy beat a MUCH bigger guy who had some training.
This is where you're losing me. So they shouldn't fight or have careers because they're not going to beat elite fighters in higher weight classes? That's why there's weight class. If you're not watching MMA for martial arts first and foremost (i.e., skill, technique, and heart), then yeah, you may not appreciate all the weight classes, and that's fine I guess. I'm just having trouble understanding your point. I know office workers who weigh between 170-190, are you telling me FLW fighters wouldn't destroy them, or just that they wouldn't do well above their weight class? 'Cause average Joe's can't fight for shit. I don't really care, but if you're saying they couldn't beat anyone bigger than them in a fight, that's factually inaccurate. If you're saying MM won't break top ten at FW, you're probably right, but again, that's why there's weight classes.
That doesn't make sense to me. MMA is a competition. They divvy it up into weight classes to make it fair, to protect the athletes, and to make it more competitive and fun to watch. You're (theoretically) paying to see one person put their skills against another, I don't understand why size matters. If you don't like watching below average sized people fight, that's fine, it would just be simpler if you said that to avoid confusion.
I love watching Joanna Jedrzejczyk fight. Could she beat up the 150th ranked male welterweight? Probably not. Is she super skilled and fun to watch? Yes. For me, that's all that matters.