The Bitnami images and helm charts are just convenient repackaging of things that are already freely (gratis) available. There's nothing stopping you from still deploying Kafka or Redis, etc. into your k8s cluster without using the Bitnami helm chart or building your own charts.

I think that's the point of above of "now you have to do your job" There's an evaluation that takes place when choosing to use something as an engineer, and the writing should have been on the wall the moment that Broadcom bought Bitrock to start planning to reduce dependency on those things.