Why?
I can't imagine why your view of utopia requires that people with money get to choose who they transact with but people with goods and services must transact with anyone who has money. Can you explain why that's fair or equitable?
You're pointing toward a world where I can say "I won't buy from X because Y" but nobody can say "I won't sell to X because Y".
If a seller doesn't believe in mask wearing, a buyer should be able to abstain from them. If a buyer doesn't believe in mask wearing, a seller should be able to abstain from them.
Buyers and sellers are temporary roles we play, not classes of people with different freedoms.