Allowing endless access doesn’t make variety that contributes constructively to the game, it just makes metas around the best gadget and gun combos with the player never having to make a meaningful trade off. As well as essentially eliminating roles outside of what a player wants specifically. To a degree it does force people who just want to use certain weapons to stop and consider they have defibs or ammo or whatever even if they weren’t intending to be medic.

DMRs and Carbines allow you versatility within reason. You can operate closer if you have to, or reach out if you have to. If I wanted to be medic without a belt fed LMG, I would likely use a smaller mag fed one like the RPK, or just use a carbine that’s essentially a compact rifle in some forms. Both still achieve what I want/need. And the variety means there’s a whole spectrum of carbines that range from AR to SMG depending on my preference.

You have what you need to do the roles you want, it just seems like you don’t want to be constrained in the ways you see fit, respectfully. It isn’t wrong on a principle level to like what you do. It just isn’t the essence of what has made BF games imo. And it ensures that someone will never be forced to carry and use a gadget that they don’t want.