"I don't know if anyone have talked about this or have created this topic before" like it is so annoying more especially when I see some higher rank members doing this also
It is more common with newbies, not with high rank members.
Newbies like know well about forum but want to create topics to ask questions of what they already knew. It is not against rules because Beginners & Help board is for newbie questions, ask everything they don't know and it's hard to say they are not newbies.
Tolerate or not, I see it is not discouraged too much because people still send merit to newbie question threads that inspire them to create more similar new topics, ask questions which ask and answer many times.