In Europe GDPR gives you the right to have all your data deleted. All you do is send in a request and SO has to remove everything of yours, not just anonymize it. There are some exceptions for legal reasons, eg where financial transactions are involved, but comments should not be exempt.
If a business relies on exploitation, it shouldn’t exist. If paying the workers a living wage means raising the prices beyond a sustainable level for the business, this business shouldn’t exist. If a business pays out millions in bonuses to it’s executives while the workers are relying on government subsidies, the business shouldn’t exist.