Sometimes it takes personal experience to drive a point home. If your brother hadn't gone through the losses from those shitcoins he might not have taken your advice to invest in Bitcoin seriously. The truth is, Bitcoin has proven to be one of the most reliable investments over the years and new investors need to understand this and prioritize building their Bitcoin portfolio. Your brother is lucky he has you to guide him in the right direction. It's all about learning from experience and making the right decisions.
shitcoin is very risky because it has high volatility, for that reason shitcoin is not suitable for some investors especially those who are just starting to invest in Cryptocurrency. Bitter experiences will shape him into a more careful person in choosing investment media and will try to do thorough research to understand the risks before making an investment.
The reason why novice investors should prioritize Bitcoin over junk coins is because of its higher stability, which allows them to invest more safely. In addition, Bitcoin has also received greater recognition from elements of society, companies and countries, so it is no wonder why Bitcoin is more widely used as a means of payment compared to junk coins.