For all open source support, support.rstudio.com is basically deprecated, and replaced by RStudio Community.
There was a thought to hide topics threads related to open source tools, but some of those pages are still useful and popular.
RStudio's various support and development teams use it for support of pro products, and as a place to publish static support docs ( for example, the Troubleshooting Guide: Using RStudio)
So, I suspect when you'd like to ask a question about one of these threads, RStudio Community is the right place to ask it. The core ide team checks out #rstudio-ide frequently, similar with #tidyverse questions.