Author here. Thanks @todsacerdoti for posting this.

I am big fan of the idea to have original data and context as much as possible. With previous metrics system, we lost too much information by pre-aggregation and eventually run into the high-cardinality metrics issue by overwhelming the labels. For those teams own hundreds of millions to billions time series, this o11y 2.0/wide event approach is really worth it. And we are determined to build an open-source database that can deal with challenges of wide events for users from small team or large organization.

Of course, database is not the only issue. We need full tooling from instrument to data transport. We already have opentelemetry-arrow project for larger scale transmission that may work for wide events. We will continue to work in this ecosystem.