If you get a Golden Visa through real estate, I'm pretty sure that the visa has to be canceled, before you can sell the property.
So I wouldn't be surprised if there's something similar going on here.
You can also get a Golden Visa by setting up a company and hiring yourself. So you would have to do the math - what's the opportunity cost of having the money locked up in the account vs. invested in the stock market? How much would it cost to set up a company instead?