Sorry if it wasn’t clear: I wasn’t saying that you can’t do anything with other items on the inventory screen or can’t unequip attachments. My point was that if you’re a casual player, you don’t need to ever look at inventory screen – you've picked an item, done. When Apex Legends came out this simplicity was praised and named as one of the factors of game’s success (often with comparisons to complicated inventory management of PUBG). I feel like simplicity of the interface is still important to keep the game approachable to newcomers.
Another thought: adding such feature just for Hop-up Boosters feels arbitrary. Why not Evo Cache? It would be great to keep it if you found it while being at Level 1 to use it later to go to Level 3. Why not an extra backpack? I found two purples and I want to bring the spare to my teammate. Why do I need to drop my Shield Core when I want to move a swap to a new sport? Right now, there’s a clear and easily understandable divide between items that can be carried in inventory and those that can’t, which again is important for game’s accessibility.
P.S. I’m not an accessibility or UX expert, so it’s quite possible that I’m overcomplicating the issue. But I felt that it’s important to raise these concerns to make an informed decision.