I read this before I'd seen the episode, and I'd half-expected the Zenis to say the earrings were ok from the Sayans because we know they can fuze without them, because GoTenks, right? So even though they merged with device-assistance, they're theoretically capable of doing that anyway. I was surprised and yet not surprised when the reasoning was merely 'I'm amused so it's ok".
I'm kind of annoyed at this whole thing because the fighters all seem to be all "honor! skills! whatevers!"and all about who is the best to fight in that same super annoying way Goku and Vegeta always do, instead of actually trying to win. All they need to do is knock their opponents out of the ring. Maybe the thinking is, well if I beat the crap out of them, then it's easy to just toss 'em over the edge, but other than that, they really do not need to actually beat each other to a pulp, just out of the ring. And it feels like it's been eons since anyone were actually trying to knock someone over the edge. They're just pummeling each other, which I guess is fun if you're after watching a fight? But it's not really the task at hand. The "best" fighter here doesn't need to have the most strength. They just need to figure out the most efficient way of knocking the others over the edge. I'm like...fight smarter not harder?