The taxation isn't the most bothering here, the problem is that governments have the habit of overcomplicating laws. 1. So average people won't see they pay 50%+ taxes(cause it's hidden) 2. With complex laws, it's easier to use loopholes for politicians + their friends. 3. It's easier to punish people cause it's near impossible to follow every law perfectly. That's why they come up with infinite numbers of different tax laws and procedures instead of super simple one where anyone can see the amount of tax paid.
Combine this with 0 knowledge people who want money but too lazy learning about the field they want to regulate. Or at least hire someone who understands it oooooooooor maybe simply listen to their citizens.
RE: Japan to Tax ALL CRYPTO PROFITS Including Transfers/Gains Made from Exchanges Between Coins.