@angelo I'd be interested in hearing more about what you find attractive.
Based on chapter 1, I found that it reinforces an architecture where the user has very little control over the app and data is tightly controlled by the server.
I prefer https://mavo.io/ as an approach to web applications.
@angelo Ruben did write a Solid backend a while ago but it needs to be updated to the new auth. https://github.com/RubenVerborgh/mavo-solid
The get and put implementations also just treat the content as plain text, so I don't think interoperability with RDF stored on Solid has been explored yet.