Some history here https://github.com/benthosdev/benthos/issues/1184#issuecomme... but the TL; DR version is that the client library has caused a bit of friction in the past. They had several releases where one of its dependencies produced various compiler warnings and there was this dbus zombie processes issue which caused some concern... However, if you wish to run this at scale in production, you might want to look at https://github.com/benthosdev/benthos-plugin-example and craft your own custom Benthos build, where you import just the components you need, such as the Pulsar ones.
