Losing fighters clearly feel some type of way they lose a close fight. However, there's a simple solution to this debacle. The solution?
DONT LEAVE IT TO THE JUDGES.
This is stupid for the obvious reason, that fighters fight as good as they can.
There is constant decision making involved in fighting. Fighters want to win. That's not even arguable. Fighters fight exactly the way they fight because they believe/ are advised that they have the best chance at winning, fighting the way they fight. If they get overly aggressive, their risk reward ratio drives off a cliff. There is such a thing as winning comfortably on points. At the end of the day the truth is that judges get more fights right than they get wrong. By a decent margin. So knowing that every 10th-20th fight or something gets a faulted decision can't reasonably be enough to make a fighter change his approach. As I said, they fight as good as they can. If they just chose to get more aggressive, they would effectively reduce their chance of winning.
Don't like they decision? Tough luck. YOU failed to convince the judges so YOU lost.
That's a restricted viewpoint as well. There's always two fighters in a fight. If one guy loses, the other one wins. Even if the argument was valid that one guy didn't do enough to decisively award him the victory, then it still makes no sense to give the other one the victory. Afterall the premise here is that under more or less educated viewers the consensus is that one guy won a fight.
Your argument is that one guy just didn't work enough for it to be decisive. But the premise stands that the other one didn't either. The unfairness goes into both directions. One guy gets robbed of something and the other gets awarded something he never earned. For the fans it's not just exclusively the empathy with the loser that makes them complain. It's also the outrage that someone who shouldn't redeem the fruits of winning a fight gets to do so.
If I get your argument correctly, you're acknowledging that there is such a thing as a 'clear' decision, you just think that in 'close' bouts fighters have to accept the reality of current judging.
But that's an irrational conclusion. If accepting wrongs as 'truths of reality' was a thing, no one would ever complain about anything. That's not the case though. People rightfully complain all the time about shit that needs to change, because if they didn't, nothing would ever change.
The logical solution to scoring close fights isn't scoring them either way. It's to score them as draws.