Please consider the following question: Good GUI for R suitable for a beginner wanting to learn programming in R?. I just voted to close it as off-topic. Besides being off-topic it is also outdated since much has have changed since most of the questions were answered and/or updated. Do we really need such questions and answers? I'd say the questions like this have no value at all and should rather be closed and deleted than kept for "historical" reasons.
I would not delete such questions, as I don't enjoy broken links. I would not lock them either, as I don't enjoy incorrect content (locking prevents from editing). I would simply add some warnings that such questions are off-topic nowadays.