I mean, it's a sporting event with rules and a scoring system. So if you lost on points, you lost on points. I would agree taking somebody straight down and choking them is more dominant than being mostly in neutral positions the entire match and then one guy gets a guard pass late in the match--but the athlete with the most points still won. Because I have some wrestling background and good pressure on top, I have definitely won matches on points against guys who I felt were probably better at jiu jtisu than me--if we had been just rolling with no time limit, there might have been more chance that they would eventually get me. But I was still happy enough to win the match. I was executing what I wanted to do under the rules of the contest--maybe not executing entirely, to get the finish, but more fully than they did. I do think refs should call stalling if somebody is not trying to improve position and set up a submission.
I don't think the "well in a real fight" argument has any relevance--we're talking a sport, not a fight. It's a combat sport, but still a sport. I've had matches I lost where I spent most of the match in very dominant top positions. If it had been a fight, I would have been able to possibly TKO him with strikes. But the guy ended up defending submission attemps and then catching me. I didn't think, well--if it was a fight I would have smashed him while he was underneath me. I thought, fuck, that guy managed to pull out a nice win by doing that one particular thing better than me at that one particular moment.
I did one particular tournament a few times where they had a system of scoring that only gave out a single point for anything and only gave a point for moving from a neutral position to a more dominant position--you could get a point for a takedown and another point if you got side control, mount or back. But you couldn't get points for going from side control to mount or mount to back. So the most ahead you could get in a match was 2-0 and they also gave a point for reclaiming guard or escaping back to the feet--for reclaiming a neutral position from the inferior position. It seemed pretty much designed to take away the wrestler's advantage of just racking up points early and forced a lot more submission attempts.