No, I believe it had to do with charging. Charging a Macbook through the wrong part caused some kind of chip to misbehave (overheat, perhaps?) and it would cause issues for the nearby port. You couldn’t charge it quickly through that port either.

“Luckily”, the early ARM Macbooks couldn’t drive more than a single screen anyway (Apple’s I/O die just couldn’t handle two of their own extreme res screens so they disabled the feature, Linux on the same machine could run two normal screens just fine), so you weren’t able to run into too much trouble with it.