ambigali
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.