Since when he started to get into crypto? he's not the one that says that about cryptocurrencies. Most people who have lost their money trading on crypto and it's not effective on it would say the same thing due to the losses that they've made.

He probably thought that he can make easy money based from the ads and people that he have heard who are holding crypto. If he's bad at trading, he has to adjust and accept that he lost. But, if he wants to continue, gain more trading experience and learn from his mistakes and losses. It's for all cryptocurrency that everyone trades not only specific for link.