That’s how the market works. You avoid paying extra taxes than required right? Even though that denies the government extra funding. The only difference being one has been decided as wrong and the other is fine.
Yes, society has deemed that it’s fine to make use of the avenues that have been explicitly created to reduce your tax burden - that’s why they were created. Society is also relatively fine with using unintended loopholes for the same purpose (although it is a lot more controversial and criticized), because we don’t tend to punish people for breaking laws, rules and regulations that don’t exist. When we end up caring a lot about them, we plug the gaps
The other person was talking about straight up not paying for goods and services that are sold at a given price, which is stealing. The more apt comparison would be to tax evasion (actually breaking the law), which is a crime, widely considered wrong and punished accordingly
It isn't how the market works, and you absolutely don't take this line of reasoning when paying someone rendering services to you which is why you instead tried to analogize it with taxes.
You only use this argument for Youtube content creators because it's trivial to avoid payment and then backsplain it with unique moral justifications.