Not in small claims. The service agreement permits it.
said by Steam :Notwithstanding this Section, you have the right to litigate any dispute in small claims court, if all the requirements of the small claims court, including any limitations on jurisdiction and the amount at issue in the dispute, are satisfied.
Valve is only going after the bloodsucking lawyers, not users who may have a valid INDIVIDUAL claim.
Small claims must be filed in the county of the defendant and a 5k cap damages. Second if a verdict is made against them they can file in regular court (perhaps arbitration) and as soon as the file the small claims verdict is replaced by the regular court ruling. If you win there you may be granted your original judgement but you will have spent more than that making you a good example for the company.