Or how would a vendor get connected with a dealer who wants to make payments to the vendor using Bitcoin if they both have to stay anonymous from their holdings?
These tags are not for these people because they are using bitcoin to make payments when they buy or sell something. So you can see that this is a public thing that people who buy something from them will know. so they cannot hide from anyone because it is what they use in their business. For example, if a country accepts bitcoin as a means of payment, you will see that all the citizens will likely have bitcoin in their wallet. In this kind of case, it is well known that everyone in the country may have bitcoin for transactions since it is legal, so the same thing applicable to these people using bitcoin as a means of payment in their business is not bad if people who purchased something from them know that they are hodlers; it just remains for them to ensure enough security for where they are storing their coin.