Three engineers have built and supported a codebase generating 20 MM in revenue a year. Maybe get off your high horse, it’s really easy to mistake a complex order for chaos from the sidelines.

Rewrites are almost never the answer unless you wrote the previous version. Sure, to most of us here the code you’re describing might look like garbage, but it works and certainly a ton of wisdom has been embedded into it that will be difficult to replicate and understand unless you dive into what exists now and try to work with it on its terms for a little while.

I did a major rewrite early in my career based on something someone else built, and it was a total disaster for a while. I thought I knew better as an outsider looking in, and sure, eventually we did improve things, but a lot of my choices were not best practices, but some form of fashion.