Think of the word "gun". The image that entered your mind just now was not a water gun. It was a weapon, the kind of device the gun emoji used to depict and now no longer does.
The people forcing this kind of change want you to associate the concept of a gun with a water gun or other toy, and they think that by changing your though pattern this way, they'll make society safer.
This is terrifying and totalitarian idea. Once you buy into the idea that you can force a change to the language to achieve your desired social aims, there's no intrusion into private life that you will be unable to justify.