I think Lightroom is all about showcasing your photos and making them look great. To me, nothing ruins that more than that annoying photo info overlay that appears in the top left of the photo in the Library and Develop module (see image below).
Every time I’m teaching a workshop, I noticed that overlay on several of the screens from people in the class and you’d be amazed at the sigh of relief when I show them that you just have to press the I key to turn it off. Yup… that’s it. Press the letter I to cycle through the different info overlays and eventually turn it off altogether.
Have a great day