They seem to be the only vendor crazy enough to try to fast-follow Databricks, who is clearly driving the increasingly elaborate and sophisticated Delta ecosystem (check the GitHub traffic…)
But Microsoft + Databricks is a lot of momentum for Delta.
On the merits of open & simple, I agree, better for everyone if Iceberg wins out—as Iceberg and not as some Frankenstandard mashed together with Delta by the force of 1,000 Databricks engineers.