The removal of clothing mods from the vendors makes no sense to me. I have been trying to wrap my head around it, but cannot find any logical, or even GOOD reasoning.
I have heard it is because CDPR cannot figure out the proper pricing for the mods, either too little, or too great. However, this isn't an MMO, so economy really means almost nothing in a real sense, as I've easily broken a hundred thousand before even doing the main story-starting heist with Jackie, and surpassed millions by the time I decided to do Nocturne. Whether the mods cost a few hundred, or a few thousand means just about jack.
The issue is the problems created by removal of these mods. Because they exist, dropped as loot from enemies, or found in containers, plus the existence of a crafting set of skills for the player, means craftsmen DO exist. And, in Cyberpunk, especially, the people are always out to get as many eddies as they can. That means craftsmen would CERTAINLY open shop to either craft and sell their wares, or open shop to offer their services for people who focused on other things.
As a hypothetical situation... Adam Smasher is written up to have a 4 in Tech (so we KNOW his crafting skills are pitiful). You mean to tell me he has been responsible for finding all his mods all through his life? Or, perhaps, he paid (or threatened) NPCs to make them for him? Pretty sure it would be major comedy to imagine Smasher, the big juggernaut brute he is, slaughtering camps of gangs, just to rummage through their boxes, then cursing because he couldn't find any mods.
And, because of how important mods are, it almost forces players to sacrifice vital points they could be spending into far more important areas, just to be able to craft their own mods. This goes alongside the issue of not being able to find upgraded versions of Iconic gear, and not being able to upgrade them ourselves without extreme expenditure into the crafting (and thus Tech) tree and stat. I mean, just curious, but how much tech knowledge does it really take to improve upon a spiky baseball bat? And, back to Smasher, are we supposed to believe that he is only using whites and blues, because there is NO way he improving his gear with so low a Tech stat.
What results is that even the most barbaric brutish character has to sacrifice points in an area they should have no points in just about, just to be effective. Almost every character ends up needing to be a master craftsman, and a professional at handling high tech, even if they are otherwise just brutes, gunslingers, assassins, etc. That's called a Skill-Tax in other games, and is never a good, or even ok, thing.
So, please return things to the vendors that ought be there, unless there are very good reasons (pricing being so very opposite of a good reason in this game).