Whoever wrote this blog post missed the point in the way the fediverse is decentralised.
It's not about hosting. It's about ownership. And that means hosting can change at any moment. Because no one company decides anything.
That's why we really want the fediverse. Because it's not build for late stage capitalism and monopolies.
And that is exactly why we need more regulation on this area, because it's NOT sustainable right now.
This was why the EU made it mandatory to use USB-C, so we only need few chargers for everything in our home. This alone were tons of e-waste reduced each year.
We need this thinking in other areas too.