Encryption doesn't matter.
Automated deep packet and encrypted packet inspection is burgeoning with advances that put the single-actor work-arounds to shame.
1). Your ISP knows your traffic is encrypted. It knows what cipher and protocol you're using, and its routing is not protocol-agnostic.
2). Your ISP knows beyond "mostly confident" the type of files your packets contain. If you don't keep your connection open and use any of the public encryption methods, your ISP will know exactly what you've downloaded to a reasonable degree.
3). HTTPS is only as good as all the different pieces combined (browser, root CA, server, site, client). And if one of those goes bad, it's worthless.
4). If you use encryption heavily, you're already flagged.
5). If you don't use your ISP's CDN, you're already flagged.
6). If you connect to any other site besides Google, YouTube, Reddit, Twitter, Facebook, Wikipedia, or Instagram your aggregate data will be quickly analyzed and compared with a threat table, and appropriately flagged.
7). Traffic analysis is trivial when you're the one routing the traffic.
Google is Dunning Kruger evil. ISPs are "pick up that can" evil. The lack of serious developments in HTTPS are "see no evil" stupid. The thought that HTTPS is anything but a red hearing is "Ivan the Fool" stupid.