It is very much a fork of VS Code at the moment but I appreciate the massively reduced friction getting R up and running. While RStudio is still the best IDE for R, it is beginning to feel dated and this will likely overtake it as the main environment in relatively short time.
I tried Positron and it is really set up to feel like RStudio from the get go. excellent job to transition Rstudio users to Positron in the future (if that is the goal)