Author here. That is a gross oversimplification imo. Money can be used for expression of speech but most commercial transactions shouldn't fall under it. I am of the opinion that money laundering/tax evasion etc are illegal activities which should be monitored and banned. Blanket banning a legitimate service by uploading Etherscan tags is super stupid and affects a lot of normal people.

Equivalent would be to block all withdrawals/deposits for all users at an international bank because they were found to be violating AML laws in some country.