It is not a loophole. You or anyone can start an LLC. Register with your state, get an EIN from the IRS. Create an operating agreement. Single member LLCs are considered the same to the IRS and a sole prop. You should contact an accountant or Green Trader Tax to determine if for your situation, if it is worth the extra cost for your business. I have a number of clients that have LLCs. They can write off some expenses, create a pension plan, get health insurance, etc and protect your personal assets.
It is a big decision, I would not make it from information you read here,
I hope the OP makes a good decision...trader tax status, LLCs, sole prop or whatever.