Explosives (grenades, c4, RPGs) vs infantry are useless

The lack of splash damage against infantry is abysmal and frustrating. You would expect throwing a grenade/RPG/C4 in a room  with 4-5 campers that it would at least take out 1 or 2 guys, not to mention the entire room. As they are now it is mostly a joke or a distraction tactic and just tickle them. When I see a grenade icon I do not even bother moving if it is not near my feet since I know it will do nothing.

I saw cars/tanks/explosive barrels exploding next to the enemy and they did absolutely nothing to them.

There are countless clips with guys launching RPGs at the enemy feet or in a cluster of enemies, c4 throws next to the guy, grenades landing 1-2ft and they do absolutely nothing.

At this point why even give players grenade options since they are absolutely pointless?

The statement that it is "to prevent grenade/rpg spamming" is garbage, all the older BF games had no such thing and they were just fine. In BF3, BF4 you could mostly clear a room with an RPG or kill at least 1-2 guys with a grenade and nobody cried about it.  

What this is doing, it jut promotes camping and mostly affects Breakthrough and Rush modes where if the enemy team gets hold of a good choke point they can just hold it without any repost from the other team knowing that they cannot clear that choke point easily by throwing some grenades or RPGs since they do absolutely nothing.

This was surely implemented to not scare new players to the franchise and to not make them rage quit  not pick up the game again.