@RanzigeRidder2 Reality does not make for an enjoyable game.
I don't want to have to leave the match (and/or, spend an hour or more crawling or getting carried) because I got kneecapped from 1 stray bullet. The majority of guns are extremely inaccurate (say, enough to land headshots when shooting at someone's chest ~15-25m away, if not closer) reality-wise and bullet velocities are drastically slower than they are IRL (as an extreme, you need to lead with shotguns at ~5m), yet there's still complaints about the guns being too accurate. The glock would be able to kill people in 1 headshot from the average Battlefield engagement range. People wouldn't be able to spray, but getting beamed by bursts instead of sprays wouldn't be much different. People do not put red or green glowsticks on themselves and I doubt any military currently or 20 years into the future with mass tornadoes would have the resources to give everyone a helmet with a fancy HUD that displays all their teammates and spotted enemies in real time. And you'd probably really want even the blue doritos, because friendly fire casualty rates are fairly high - "Desert Storm battlefield fratricide rate from 23% to 17%. Even so, either rate is consistent with historical combat experience." --
https://www.usni.org/magazines/proceedings/1994/june/friendly-fire-facts-myths-and-misperceptionsTurns out you got kneecapped by a teammate! Also the RPG would be useless against tanks because they have ERA blocks, you would have to use the javelin. And you wouldn't be able to use the Javelin from closer than what, 200m?
All heatseeking rockets in 2042 fly at fairly slow speeds. The M5 and RPG fly many times faster, enough that often pilots won't react in time to the incoming missile to flare it away. If helicopter flares didn't break laser designated lockons, any helicopter that dares to be even slightly aggressive would be guaranteed to die. You will essentially break helicopter gameplay. Not only that, this wouldn't actually solve the issue much with attack helicopters - they will still hover around the side of a building that's OOB or some tall hill and spam "anti-vehicle" rockets that are more anti-personnel than the "anti-personnel" ones or let the gunner snipe you, and inch behind when sufficiently threatened. You've instead forced this whole dynamic to happen way more often, which is extremely unenjoyable for both parties and I've been on both sides of that already.
And yes, the RPG probably shouldn't be able to lock on. However, your average player has trouble hitting moving vehicles. Should they not get to benefit from their friendly recons?