you don't need a bank account to bring income into Thailand. Withdrawing from an ATM, using an overseas credit card etc all counts as bringing into Thailand
If you are inside Thailand for 180 days or more in a Thai tax year and you bring income into Thailand then you are required to file a Thai tax return. Whether you will have to pay tax or not will depend on your circumstances, tax allowances, credit for tax already paid elsewhere on the income etc
even true digital nomads should be registered for tax somewhere. If you aren't then you're probably not going to get a visa based on work. You might have more luck with soft power