Maybe as a standard it was lacking... but iirc Firefox, Safari and Chrome all had support, and IE/MS was the one holdout. I get that it was too "loosely" defined as a Standard.

I also think the UX for WebSQL isn't great and a modern async/promises based interface would have been better (even if queries themselves non-blocking and serialized on another thread). Combined with the File System Access API, this could be really useful though.

Currently toying with a Rust/Tauri project, and debating on using the SQLite plugin to do the data access in the UI, or in the rust side, then serialize the requests across more manually. Since I'm dealing with other services, will have to do a lot of that anyway.