Put it this way: What store have you gone to (in the US) that shows you the price of the item with taxes included? Including taxes isn't the norm nor expected. Nor is including fees for the travel industry, with the notable exception of airlines.

Airbnb giving you a toggle to show "With all fees" (but without taxes) is better than every other booking site out there.

If everything is a dark pattern then nothing is a dark pattern. Not advertising the various state and local taxes up front and instead calculating them at checkout is nearly 100% of transactions work in this country.