Good to meet you! I hadn't seen graphjson before, I'll check that out. I'm also a fan of tinybird, and I think we have similar goals of wanting to make it easier for people to adopt OLAP.

On the technical side, I've made different design decisions when it comes to ingesting and processing data. For example, after a table is created, you can post new JSON, with different columns, and we ingest it without needing a manual migration step. I also have a different treatment for JSON arrays, where we can split them into multiple Clickhouse rows (rather than using a clickhouse array.)

Philosophically, I think there is a lot of room for open-source software that also has an amazing UI and developer experience. I've been writing OSS for years and basically think this is the best way to build successful developer tools.