If something hurts other people, you shouldn’t do it because it’s immoral, whether it’s legal or not.
You, as a person, have a responsibility to decide whether an act is moral or immoral and act accordingly, regardless of what other people decided about it in the past.
Obeying the law because you assume the people who made the law had a good reason abrogates your own responsibility for your actions.
I agree completely with what you’re saying, but what the other user is saying isn’t wrong either: there is always a reason for something to be illegal, and, before you decide to break a law, you should make sure you know why it’s illegal and what the possible consequences of breaking it (other than legal) might be.
It’s sort of like writing a book or making a film. There are lots of “rules” to follow about how those things should be done, and there are plenty of good reasons for those rules to exist, however all the best artists tend to break those rules - but that’s because they know what they are doing, and how to make it work. Another example is the billionaire submarine which crashed. They chose not to follow a lot of safety regulations in regard to the making/using of the sub, and the result was what we know.
In short, if you want to break the rules in regard to anything, it’s important to be aware of what exactly you are doing, and why those rules exist in the first place.