Do you think I should sell Ult Wear?

Greetings friends, I bought myself an unused, closed box second hand Ult Wear on my trip to Switzerland, but what I saw in this subreddit started to scare me and I'm thinking of selling this headset. Do you think I should sell it (I won't get anything if I sell it) or can I continue to use it this way?

I also have the Bose QC Ultra, but I usually use the Ult because I don't like the bass response and material quality.