TTS has several tax benefits vs investor status, but also involves paying SE tax, allowing an employee of a trading entity to have EARNED INCOME (which in a trading business comes from capital gains). Earned income is commonly known as W2 earnings and is taxed. Otherwise, capital gains are considered UN-EARNED INCOME.
I don't think this is correct. You can have trader tax status and still produce unearned income unless you set up some sort of business entity.