Ali here, with a perspective about the split. Disclosure - I work at Ahana and am an active member of the Presto Foundation. When I see things like this, it appears that Trino/Starburst wants to continue to push the narrative that Presto is a Facebook-driven project to keep the communities fractured which is pretty unfortunate. In reality, Presto is a community-based open source project housed under The Linux Foundation and has dozens of companies actively contributing to it and using it - Uber, Bytedance, Intel, Twitter, Tencent, and many more. There's no reason why the 2 communities can't coexist peacefully.
For all intents and purposes, both projects are active and lively. It seems that Trino is more focused on federation and building out connectors. Presto is more focused on being the engine for the data lake/lakehouse. Both projects are doing well and solving different problems. There's been a lot of innovative features in the Presto project over the last year that are only in Presto, like Presto-on-Spark, disaggregated coordinator, Project Aria, etc. In fact we just hosted a fantastic user conference a few weeks ago that showcased a lot of that innovation and how companies are using Presto at massive scale today (if interested, check out the sessions: https://www.youtube.com/watch?v=Gi8i7eHqwyw&list=PLJVeO1NMmy...)
Long story short, Presto is alive and well, is not solely backed by 1 company (quite the opposite of Trino/Starburst), and has a lot of tech innovation on the roadmap. We're excited about the future of Presto.