Wish it were that easy in Illinois. iirc, initial filing was around $800 (no lawyer fees included, just the state fees) and every year you had to file an annual report that cost an addition $250-ish.
Doing the filing, annual report and then the K-1 for taxes takes time. By no means is it “easy” if you do it nor is it “cheap” if you have a lawyer do it.
You need to balance the actual risk you face and the time and money involved between an sp and an llc. To blindly say you have to go llc is not the right answer.