I haven't seen good suggestions or even people that represent themselves as "defender" of realism or SP/COOP players to offer compromises, did you?
It's always only "I like it the way it is and it must not be changed" or "in the real world this given weapon system has this capability".
And more important there is no "sides". It is always about individuals to make comments.
No one can speak for "a side". Especially 99% of the players/people don't speak up at all (here).
Arma offers the flexibility to be played in many different ways and it should be.
It is not complicated really. One can offer optional/configurable solutions (difficulty settings, additional classes).
Also ACE has many nice scripted systems and adjusted configs. Does any realism or SP/COOP player complain there about (TAB) lock removal?
Of course various community members have made different working solutions as well like HeinBloed (GDT) or Mandoble (Mando Missile) or Big Dawg KS and others.