I have been reflecting on why this one seemed so easy. Admittedly there were more than the usual number of easy clues but many were quite difficult to parse.
It seemed easy because there were no devices (clashes, jumbles, extra letters etc) to stop the use of on line word search tools. So once you get going you simply search for words that fit.
The Listener is one of those puzzles where it seem acceptable to use these tools. I would never allow myself to use them to complete the Times crossword for example.
Perhaps those that complain it is too easy should start by attempting the puzzle without the use of electronic aids. It would certainly make a bigger hole in their weekend.