You've got a point that it's frustrating to deal with regulations on crypto. Many people choose to hold their crypto long term and only sell small amounts for bills which aligns with a minimalist approach and avoids a lot of headaches.
However deliberately misrepresenting the source of your funds to buy assets is a huge legal risk. Creating a fake paper trail to clean money from crypto could be considered money laundering, and the penalties for that are severe, including fines and prison time.
A safer, more straightforward strategy is to get a traditional job for your fiat income. This keeps your crypto a separate investment and gives you a legitimate source of funds to buy assets without any legal concerns. It's a way to have your cake and eat it too, without the risk.