It has been mentioned, but the selling of items for (real) Steam money is very different to the selling of ICE. The ice can't be sold for money, only NIC, so you have the money coming from in game. Selling items on Steam means you items have a Real Cash Value. If I blow up a bot that I could have sold for $20, I am actually $20 worse off. If I blow up a bot that is worth mills of NICs, I have just spent some in game money playing a game, perfectly fine

Personally I can buy boosters and am not upset by 'other people p2w', but I am very put off by my in game assets having a real cash value. Grinding in game for a few hours to earn an item is fine, but grinding out of game for it just feels wrong and wondering 'how much real money can I get for these pixels' just stops them being pixels and makes them into real assets.

My final point is that if people can make money from it, then they will (even for peanuts) and it will encourage any kind of scamming / stealing that could be gotten away with.