Christ, people get way too emotional about sh*t like this. It's a really simple concept, people. Two ideologies. Neither is inherently better than the other. They cater to different people with different opinions.
Since Yuna is so insistent on using these assumptions as factual evidence, here's your counter. I did a 1v1 test for the 'ISP' project with Smash Balls on. Toon Link v. Ike. Human test. I was the more skilled player according to the control set (10 matches with no items), with 8 out of 10 wins, the only losses in Sudden Death. We got the exact same results from the item set (low rate, not enough room to list all the disabled items). Ike rarely got the Smash Ball because he wasn't smart at all in trying to break it. He'd get one, maybe to aerials off, and I'd let him just so I could go in, throw an u-air/up-b/bomb to snipe the Smash Ball, then commence with the ****.
So, I have a specific scientific test that supports my theory that, even though there is some randomness in Smash Balls, the more skilled player can manipulate the situation to get the Smash Ball even if it doesn't spawn near him. All I've seen anyone (not just Yuna) give on the subject are vague assumptions and 'Nostradamus'-style predictions on the future. Again, I'm not saying that entirely disagree with you (I see both sides for what they are and how they are right), but I'm basing my actions on observable truth in a controlled setting. Science: it wins.