$10,000 is well within reach for indie developers - if you can’t find a way to raise that amount of money, simply put, the project is probably not worth being on Steam. You may not like that, but it is realistic, and it is not really that large an amount of money to raise (a $20 game need only sell 500 copies to recoup that fee, start making revenue and start paying the Steam royalty). If you honestly believe that $10k is too much, Steam is not the platform you should be targeting.
If the fee is only $200-250, the onslaught of absolute **** will continue, and quite possibly be worse than before as the previous barrier of Greenlight won’t even be there to stem the tide.