why does this cap exist? what's the harm in rewarding players for grinding your game?

so I reached this cap today. I am a little annoyed that they limit the cap to only 3k points and that it exists in the first place. people that spend time and energy grinding comp should be rewarded for it, who cares if they unlock lots of weapon variants? they earned them no?

so I reached this cap today. I am a little annoyed that they limit the cap to only 3k points and that it exists in the first place. people that spend time and energy grinding comp should be rewarded for it, who cares if they unlock lots of weapon variants? they earned them no?