would it not be more fun to scavenge br ammo off dead players or be forced to pick up a different weapon? less ammo also prevents snowballing because the game would become more challenging the more kills you get depleting your resources.
same thing with grenades, being able to carry 4 while players respawn with 2 leads to snowballing.
same thing with one weapon starts, being able to carry 2 while players respawn with 1 leads to snowballing.
even the equipment could be considered snowballing since we can carry 1 but players respawn with 0. thats why equipment should generally be neutral.
Some of these design choices is like scoring a goal and then the team that scored kick off again inside the oppenents half.