Indeed. It's a safe bet that most people voting for 'realism' would not get what they think they're asking for. Increased realism would, sure, generally bump up inaccuracy and reload time, but not by as much as most people ask for. It would also bring things like:
A significantly increased sprint speed and sprint duration. The "sprint" speed in RO2 is 5 m/s, which is, at best, a jog, even counting weapon & ammo weight. Military training routinely involves moving quicker, for longer, with more weight. An average fit person could 'sprint' across an entire RO2 map at the game's pace.
Hugely increased grenade & artillery lethality, a stronger MKb42, and PTRS effectiveness reduced to basically nothing. The are all intentionally skewed from appropriate figures, as gameplay tweaks.
Hugely increased zoom. Getting realistic acuity on typical monitor resolutions these days would require roughly three times more zoom than RO2 maxes out at currently.
More SMGs. Way more SMGs. The PPSh was everywhere in Stalingrad. Russian, German, you name it, it's hard to find a period picture that doesn't have one. RO2's quantity of them is awfully conservative by comparison. Oh, and it would not kick as much and be more lethal too
It's all well and good to ask for more realism, but it's not a very helpful term when it comes to describing what people actually want. Pretty much everyone who uses the word realism means something different by it.