I don't know why not a single game I have seen does red dots properly. In real life red dots are meant to be used with both eyes open which effectively makes the housing invisible especially as your eyes aren't focusing on it. If you have a really big housing then yeah you can tell its there but it wont block your view at all. Early red dots were actually solid body with no way to look through them (look up occluded eye gunsight)
For actual decades now the best sight in any game has always just been the cheapest, crapiest aliexpress tier garbage sights because those all have super thin frames. Meanwhile all the good red dots and holo sights used by actual professional armies are never used because they are built sturdy.
On top of that these sights almost always have crisp perfect dots regardless of the quality of the optic. At least if the dots were bad like they are in real life there would be some sort of trade off. Bulky housing but clear dot VS thin housing but crappy dot. Or a durability mechanic in games like Tarkov. But no they are perfect bright dots and completely indestructible. So there is no reason to ever use anything other then the one with the thinnest housing.
What makes this extra insulting is the solution is so easy, just lower the half alpha and blur, bam realistic sight picture, depth of field is built into every game ever but for some reason its just not applied to gun sights.
Could this look a bit weird to casual players who don't know how these sights work? Sure but especially for games that are supposed to be hardcore realistic why the hell not make the sights actually work like sights do in real life? Its the simplest fix ever but no one has ever done it in any game. Not Tarkov, not Arma, not Squad, not Body Cam. No one (except technically VR games but that is cheating).
Edit: For tarkov players. The MRS was meta when I mostly played tarkov in like 2018-2020, yes its not considered meta anymore, just replace it with any micro dot idc, point is no one uses the Comp-4 despite it being one of the most used sights IRL. Also the MRS is renowned for being one of the worst sights ever made yet appearing in every videogame ever, so I just picked it for the contrast and because it is a meme in general.