It's 2035 we barely have bayonetts in 2025 I don't think this is a good addition.

This is not true. Most armed forces still have bayonets that can be mounted on rifles. I'm a soldier myself, and we have bayonets as part of our equipment. Second of all, just like in real life, would be the player's decision whether to mount them on the rifle.

Oh ok. I didn't know this.

No wonder... bayonets are rarely seen. Nowadays, they're mostly carried as knives and mounted on weapons primarily for display at parades and other ceremonial events. Few practice bayonet combat like, say, the Marines. But that doesn't change the fact that they're available, and nothing prevents you from mounting one on a rifle, especially in trench warfare or CQB situations. A rifle can jam and become ineffective. Ammunition can misfire or run out. But what about a bayonet?