I think it would be a good idea to completely disable any button
that selects whether opened items are automatically added to the playlist,
because that should be an unavoidable hardwired behaviour
on account of the many advantages it brings to all users,
first of all going back to playing a previously played stream
whenever the last opened stream is broken or has a delay in starting,
which is of course preferable to VLC wating for a the stream to start.