I don't feel this is impressive. In Big Tech companies it's common for a team to rewrite an entire microservice without having any impact on users. Sure, a lot

I don't feel this is impressive. In Big Tech companies it's common for a team to rewrite an entire microservice without having any impact on users. Sure, a lot of that is for political reasons and unnecessary from a business perspective, and perhaps is selfish from a promotion perspective, but it's done very often.