No one should be using on-chain Bitcoin transactions for in-person exchange. Partly due to the high fees, but mostly because of double-spending and lack of privacy. Lightning Network solves all of these problems. Fees are much lower, settlement is instant and clear to even unsophisticated users, and the recipient cannot see from where the funds originated.
Taxes are a different issue and that's up to each jurisdiction to solve via better legislation.
Taxes are a different issue and that's up to each jurisdiction to solve via better legislation.