No, it isn't: it's neither about websites nor GraphQL.
The query language is substantially more powerful than GraphQL, much closer to SQL. And the idea is unifying and querying any kind of data, not just websites but also databases, raw files, ML models, anything at all.
For example, the cargo-semver-checks semver linter for Rust uses Trustfall to abstract over the different JSON formats in which different Rust versions describe a library's API. The lints are written as Trustfall queries (GraphQL isn't expressive enough for this!) and don't care about how the underlying data is represented. Recently, I was able to tweak how those JSON files are used to serve data, and sped up cargo-semver-checks by over 2000x -- without changing a single query. More info here: https://predr.ag/blog/speeding-up-rust-semver-checking-by-ov...
The query language is substantially more powerful than GraphQL, much closer to SQL. And the idea is unifying and querying any kind of data, not just websites but also databases, raw files, ML models, anything at all.
For example, the cargo-semver-checks semver linter for Rust uses Trustfall to abstract over the different JSON formats in which different Rust versions describe a library's API. The lints are written as Trustfall queries (GraphQL isn't expressive enough for this!) and don't care about how the underlying data is represented. Recently, I was able to tweak how those JSON files are used to serve data, and sped up cargo-semver-checks by over 2000x -- without changing a single query. More info here: https://predr.ag/blog/speeding-up-rust-semver-checking-by-ov...
If you want to see more of it in action, there's a 10min talk featuring demos and real-world use cases here: https://www.hytradboi.com/2022/how-to-query-almost-everythin...