Yes, most of these tools are a pain in the ass to use, so people can't be bothered.
The only universally used tech on this list is SSL, because end users don't need to "install SSL and learn to use it" - we had to put in the work to upgrade or shitty servers, and they get the benefits.
Time had proven that the "don't you care about your privacy" argument doesn't work, so it's up to us to make the privacy-respecting tools better than the alternatives
That's exactly my point. I'm not deluded to the point I expect people to read up and install all these tools; it's our job to make these tools so ubiquitous that it doesn't take any effort to effectively use them.
Expect people to install those tools in unrealistic. But companies can implement all the features in the end product (web browser, email client, IM client etc.).
The only universally used tech on this list is SSL, because end users don't need to "install SSL and learn to use it" - we had to put in the work to upgrade or shitty servers, and they get the benefits.
Time had proven that the "don't you care about your privacy" argument doesn't work, so it's up to us to make the privacy-respecting tools better than the alternatives