Good point. But I would argue that receiving payment in BTC makes it easier to illegally not declare the income. Now that you can pay for all kinds of products

Good point. But I would argue that receiving payment in BTC makes it easier to illegally not declare the income. Now that you can pay for all kinds of products and services using BTC there's no need to convert it to another currency first. The only way to trace it would be if the employer filed a 1099, which they're still incentivized to do in order to write the payment off as a cost instead of profit.