Did you just say that margin trading is easy? That's one of the most difficult and most risky things to do when it comes to trading. The risk in margin trading is very high, that's why anyone that wants to start margin should first learn the fundamentals of margin trading so that they don't end up making mistakes, trading with emotions and holding on to positions that would soon fall.
Some people might find margin trading easy especially when they have a lot to risk. Margin trading requires adepth knowledge of the market and your target, being too clumsy with your decision might leave you nothing but tears. Margin trading is more risky, yes, but it is also the highest potential rewards. But then again winning and losing will just be based and reflect as who you are in the market, know your field before anything else.
I already saw in the article that they recommended where newbies can learn the fundamentals of margin trading, just like TradingView, there are other websites too.
You can find everything on the internet and it would costs you $0 to search and learn anything. I find margin trading a hard one, but I think it will be just fine as long as you're guided by the fundamentals of it. In most cases, margin trading teach the hardest way to learn.