I guess they are talking about Team Fortress 2 here. In TF2 you are allowed to buy actual weapons and power packs in the marketplace, not just skins for them. You could also get them by playing, but it takes an awful amount of time.
You start with the same gear, and anything else you can get is sitting around the level to be picked up by everybody.
If they do have weapon skins carry into the game, Epic will have to be gatekeeper on approving all of them. If not, you'd have people reskinning their rocket launcher to look like it's something else, with negative gameplay effects.
Perhaps we'll see two tiers of aesthetic mods? Ones that anybody can create and use in their local / self-hosted games, and others that have been approved for online play?