I find your premise flawed. Taxes are not theft. They are the fees to be in the country, to do business, own property, all under the protection of a government which you have the ability to influence and even participate in.
Theft is the taking of something without mutually acceptable benefits. In essence something being taken without permission. Taxes is not this way. If you don't want to pay taxes, you can move out of the country. Live somewhere where there is no taxes.
I hear Antarctica is free. Now, you won't get the benefits of electricity, clean water, sewage services, parks, roads, telephone service, Internet, or roads, law enforcement, fire and emergency services (no 911 to call in an emergency) or a hospital to go to when your child is sick. These are all paid for by taxes.
Also, it is doubtful you will get medicine, or the infrastructure to make innovation thrive. Much of the innovation relies on infrastructure which, yep is created and maintained by taxes.
In fact, you may be very alone. Not many people would want to join you and there would not be paying jobs. Taxes also maintain the traditional currency system. Cryptocurrency is worthless without infrastructure (power, internet, connectivity lines).
Stores as we know them would not exists. They depend upon infrastructure, order, laws, business rules and enforcement, and a viable currency system. You could barter with whomever you met, but what would you really have to trade and for how long? As they could just steal what you had (that would be actual theft) and you would have no recourse. But you could be free from paying those darn taxes, right!
RE: Outcomes don't morally justify immoral actions.