My advise is invest on your own risk, research and study cryptocurrency carefully so that you could understand what crypto is and how big the risk on investing into it. Don't listen to anyone because at the end of the day you are the one who will suffer the loss do your own research and be careful always because crypto is high on volatility and anytime you can loss or earn depending on your decision.
Agree with what you said, this is something that really must be done because indeed when I was in Crypto I always told myself not to trust anyone's words too much.
Indeed, seeing the opinions that other people convey is true, but when it is said about promises and sayings about something sweet, it is clear that this cannot be trusted right away because it could contain something in it.
But most people sometimes always believe too much which makes the level of people feel cheated in crypto even more when it starts with their own negligence.