Right, I worded it badly. The performance of ES6 code is more of an issue for people who want to switch from transpilers to running ES6 natively (something that

Right, I worded it badly. The performance of ES6 code is more of an issue for people who want to switch from transpilers to running ES6 natively (something that's hard to recommend at this point). ES5 code performing slower because of ES6 features should indeed not happen and be avoided.