Redundant: not or no longer needed or useful.
Every one in my collection of 8x30/32’s (& 42’s & 40’s & 50’s) are very useful. As far as needed , I cant relate. I want what I want , I live in a free country (mostly, not to sure lately🤔). Therefore it has nothing to do with need. I occasionally get asked that questions about why do you need an AR15 or AK47, I answer the same way, I can’t relate. You need air, food and shelter. 😜🙏🏼.
Having 20+ binoculars (I know guys that have a lot more) can be considered a collection or a hobby or your an equipment junky. Hmmm, some say an addiction. The other thing is , that it’s a lot cheaper than some of my other hobbies, collections or addictions 🤭.