For what it's worth, I gave RTK a go after a rushed, failed attempt at using redux. Initially started as a POC for some internal tooling within the company. Due to its simplicity, it was a breeze to set up. Two years later, it's still great, and things like RTK Query[0] have made it even better, by removing the need to write custom data fetching logic, and adding other perks like caching.
Thank a lot for your hard work!