I'm definitely going to start renting my own server somewhere in Europe starting from January. I absolutely agree with everything he said and I really want to claim my own data again (run my own email server and things).
I read both that one and the one posted here like an hour before this one got posted on HN and they have convinced me to give running my own server a try.
In the meantime, I have just downloaded a backup of all of my data from Twitter and Facebook (Facebook's archive was like 15x as big as the Twitter's archive even though I'm using Twitter way more) that I am going to save on my server, I have switched to POP instead of IMAP on my current email service and I am testing out ownCloud in a Docker container.