The question is risk and admin, not vibes
People form an LLC to separate some business debts from personal assets, to look clearer to brands, or because a state or a partner requires it. It does not erase taxes. It does not make a hobby a business. It costs money to open and to keep open, and the rules are local.
If you are signing contracts, hiring an editor, or selling a product that could hurt someone, that is a conversation with a lawyer, not a tweet. If you are still testing, a separate bank account and clean records may be the only step you need this year.