One of the hazards of the internet is that people can give out legal advice and medical advice without any kind of repercussions.
In real life if you give someone "official" legal advice you could end up being sued as it says in the article.
But anonymous websites can pretend to have lawyers on them all they want and get away with it, particularly if they are based in a country without the rule about practicing law.
They don't care about the ethical problems in the practice of law, they just want to make a quick buck.
Please, be careful where you get your advice from, because it is not always trustworthy.