Why does "database" is surveys like this not include DuckDB and SQLite, which are great [1] embedded answers to Clickhouse and PostgreSQL. Both are excellent and useful databases; DuckDB's reasonable syntax, fast vectorized everything, and support for ingesting the hairiest of data as in-DB ETL make me reach for it first these days, at least for the things I want to do.

Why is it that in "I'm a serious database person" circles, the popular embedded databases don't count?

[1] Yes, I know it's not an exact comparison.