[Author] it was more like: we underestimated the problem and complexity of workloads our customers want to run. We did not rewrite anything but developing a new stack we can give to our customers doing warehousing. Agreed that this context is not really clear from the blog post.

Unironically, I think we will see a lot more of this given how engineering is being done currently. I have been involved in 2 green field projects in the last 2 years. Both have been rewritten or had massive "ship of theseus" type changes multiple times over that time window.

Engineers working on new products, thanks to LLMs, have very little understanding of the technical details of the product. They have the same level of understanding a traditional high level manager had of products they owned. If you ever worked in an engineering org with an M2 or M3 who always attended your outage review, and in every outage review something has to involve some issue with Postgres or your Kafka queue, that disconnected M3 would conclude:

    "Almost every outage involves some problem with Postgres. My conclusion, observed over the last 6-12 months, Postgres is bad. I see this new FancyDB or DynamoDB thing is popular on Twitter. We should try that"

I have lost count of the number of idiotic takes like that from M2s or M3s who have no idea how things work but instead focus on keywords they can latch onto that seems to be in the intersection of all issues. Then the logical solution is just to remove that and see what happens. This used to be very expensive, but if you can throw an LLM at a code base and say "Replace Postgres with FancyDB, split it to a list of logical checkpoints adding regression testing when missing to each checkpoint and open stacked PRs for all checkpoints", let it churn for an after noon, and 46k-line change PR (and $800 token bill) later you are ready to try FancyDB, why would you not give it a try? Then if you have issues with FancyDB, are you gonna spend the time to understand what's going on or just say "lets try DynamoDB next"?