I could say all of the same things about the in house tools that the “architect” wrote three jobs ago - including the bespoke ORM, object mapper, and logging framework.

Or two jobs ago where two developers who had worked at the company for 10 and 15 years respectively were maintaining a bespoke 15 year old EHR written in PowerBuilder and depended on SQL Server 2003 - in 2016.

Every company thinks they are their own special snowflake where cross cutting concerns can’t be handled by a third party.