If you ever had a clutch cable break, while sitting at an intersection in gear, you will have absolutely NO doubt in your mind whythatr is not a good idea.
Down thru the years, I have had several cables break and believe me, you never know when it is going to happen.
The one that broke on me while sitting at a stop light was on an old Triumph, and fortunately There was no-one in front of me.
However, I took it as an important lesson and always hit neutral when stopping behind traffic, or at any intersection.
Best to find neutral, even if you have to hunt for it!