Medium sized
That’s a good point. The truth is that the Halachos of LH are very complex and most people don’t know them well. However from what I recall when something is public knowledge it isn’t loshon hora. However even then it shouldn’t be discussed to disparage. Like to say I hate store XYZ they are such ripoffs blah blah is wrong. Just say I stopped shopping at store XYZ they are too expensive for my budget…