tldr: Now (a while ago) that the structure of how ECMAScript features are classified into versions has changed, does it make sense to rename and re-purpose the Tips for Golfing in ECMAScript 6 for ES6 and above?
Not so long ago, this format changed and the whole major version approach was dropped in favor of an yearly release. This means that new features would be frozen faster and, in turn, would be implemented and shipped in browser faster. Thus, from now on, we have versions like ES2016, ES2017 and likewise. This might lead to very few features of interest being landed in a particular ES version.
Coming to the main point: Keeping all above in mind, does it make sense to repurpose the ES6 tips question for all future ECMAScript versions?
UPDATE: Based on the response to this question, I have edited the tips question on the main site to repurpose it for ES6 and above.