You've written a good analysis, OP. Yes, treating email and mastodon as equal forces in the fight for decentralization is inappropriate. However, email is not as one-sided as you have made it out to be:
- Email does have a community element: mailing lists may be the most obvious example, but email does have the ability to drive community discussion. What is holding it back is obviously its age and ease of use.
- Organizations use email: Many organizations will self-host email simply to manage mailing lists as well as email notifications. Having an email address at a domain signifies your membership in some sort of community; perhaps your workplace or school.
- Ubiquity:
- Email is still a more universal communication method than any other messaging protocol. You can probably reach anyone through email.
- There are many organizations, communities, etc. offering email services. They must allow their users to communicate with other servers: no email provider is large enough to disregard all the other providers.
- There is a widespread expectation that your email address will be able to reach any other email address. In this way it is the most federated, decentralized messaging protocol there is today.
I also have a point to make, both in reference to the blog post linked and your analysis: I would not dismiss federation because of some centralization of servers.
We have a case study in email to show us how a healthier (for all of its faults) federated system can survive without becoming wholly centralized. The best way to prevent centralization from dismantling federated systems is to build in an expectation that a server/service/offering in a federated system will always be able to communicate with another in the same system, like in email. As long as one federated server/service/offering/application does not become its own "brand" compared to the other servers and the base protocol/federated system is all the talk, all will be fine.
For example:
- Let's chat with Element! vs Let's chat with Matrix!
- Let's join Lemmy.ml! vs Let's join a Lemmy instance!
- What's your Gmail? vs What's your email?
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