Sai from ClickHouse here. Totally with you here, ClickHouse isn't a replacement for Postgres. Most use-cases are co-existence - Postgres for OLTP and ClickHouse for OLAP, basically right tool for the right job situation. Both are purpose-built technologies with a similar OSS ethos/story. Btw on an interesting co-incidence, Postgres turned 30 this year and ClickHouse turned 10.

Above is exactly why we are embracing the Postgres + ClickHouse stack and are investing heavily to make workflows across both these DBs very easy for developers - PeerDB for native CDC, pg_clickhouse extension for querying CH from PG, pg_stat_ch for query PG observability from ClickHouse and more such are planned for future. And recently we also announced ClickHouse Managed Postgres which pacakages this entire stack as a fully managed service https://clickhouse.com/cloud/postgres