You can be competent without being a lawyer, sure. But if you see the other replies to my comment, you see why I would use this as a filter.

The dumbest person can be right, but as a lawyer, your guess is much better.

I don't cede the law. It's just that if I find this unclear, then J Random Hn commenter's opinion wouldn't reduce my risk.

I won't be acting based on your opinion either, of course, but the quality of your reply is clearly in a different class from the other two.