Crafting is less about modern or production-grade anything and more about understanding fundamentals. It would be equally at home in a 1980s compilers and language design course or in a 2000s version of that course. It has a single motivating principle, which is that a learner who understands the bare basics of algorithms and data structures knows, in the truest sense of the word, what a compiler and an interpreter does. It achieves that principle beautifully.
The parser’s data structure is a more traditional Abstract Syntax Node design. Roslyn’s tree design is, IMO, a good internal structure for use in a production-grade compiler meant to be coupled with a developer environment (IDE and other tools) because the complexity pays off in terms of developer experience. However, Bob set out (as far as I can tell from the book and his talks/comments on the subject) to provide a fairly beginner friendly, introduction to the topic of language implementation. Within his chosen scope the parser implementation in Crafting Interpreters is more than sufficient and clearly presents the concepts intended.
IIRC, Roslyn's red-green tree approach is at least partly due to needing to support interactive editing without re-parsing everything. If that's what you're referring to, no, the book doesn't cover that; both interpreters run either in batch mode on a single file or in a simple REPL.
If you're interested in Roslyn inspired compiler writing, Immo Landwerth who works on as a Program Manager on .NET made a Youtube series about writing a compiler, and my understanding from the part I watched is his work is heavily inspired by Roslyn.
