It is an enhancement for the benefit of front-end performance. I'd like to hear how you think that is not true?
Anyway, that is why I asked the loaded question about how many users you think there are that browse Twitter.com on their RHEL box? Hint: HN is not a good sample to answer this.
And how is a ~14-year old technology (that has been ubiquitous now for at least 6 years) considered bleeding edge?