Even if it's not a mission critical web request, isp's injecting content into your http pages is unacceptable.
Even if the government could brute force or fingerprint one of your TLS sessions, they can't do it for everyone for every site.
Just because Amazon wasn't broken doesn't mean we can't improve it.
Also your comment about a think tank coming up with this idea is an odd insult, given how broadly you can empirically see people support this.