Setting aside the fact that most people would look unfavorably on yet another box in their homes, how does any of this help you avoid the blocking and tracking of the ISP?
Your ISP will still know what you are doing, and will have the ability to block you from doing it should the need arise.
I also feel like people are proposing solutions based on technologies as they stand today. Chosen solutions to the decentralization issue need to consider realistic future cases. Just as a quick thought experiment, what happens in the near future, say, 3 to 5 years out, when a huge chunk of people are using 5g technologies as their primary connections? AT&T, or sprint, or verizon, or what have you will still get all of your traffic information in this, very plausible, future case. "It's encrypted." or "It's going through a relay." Is just not a sufficient response to privacy if you wish to have privacy from AT&T. I mean, think about it, chances are, the relay will be using AT&T too.
Which brings me to the big problem with solutions like these, ie - inevitable recentralization. Google, or Facebook, (and now because of how this new decentralization idea works, even AT&T), are in an almost unassailable position to act as the "switchboard" for all of this non-indexed data. Need to know where your aunt, who just moved, is on this new decentralized network? Are you going to ask google? or "WeAreDecentralizationIdealists.com"? Oh, you're going to ask your own node? Sorry, her new information has not propagated to your node yet. Check back tomorrow. Oh forget it, just call your aunt and ask her to give you the new information so you can input it manually.
No, she will need to be registered somewhere to seamlessly communicate changes to her node's connection information. And that "somewhere" will likely be a BigCo.
If we want to replace the behemoths, we need to come up with solutions that are just as easy to use, (easier actually), and avoid any possible blocking or tracking. That requires some very creative people to think radically. Easily blockable in home network nodes I think, are not only not really solving the problems, but are also doomed to failure usability-wise when compared with google or facebook.