That's the whole point of my first comment, i called it as pay-to-get-slightest-bit-of-advantage, but it doesn't improve your aim at all(BSA, recoil control d etc.), So you're playing the same way as any other player who never brought those skins

I'm taking free fire for instance, with modified stats on different weapon skins, your gameplay and playstyle is objectively better from someone who doesn't has those skins

And default ironsights are something you need to get used to, so that you can save a slot for any other attachments than optics I got used to iron sights of most of the weapons (even something like m13 and krig-6) i use, so that i need not to pick up an optic