Honestly it is more likely that traders need to learn more about companies/coins they are investing in.
Your attitude and confidence matters for your mental health, not for results and profit
I believe that attitude and trust are very important, both for our mental state and for the results on the crypto market. A confident attitude helps you make the best decisions on the crypto market, but if you are afraid, you will panic and make bad decisions, which will cost you the investment.
Confidence and attitude only comes second to knowledge. If you don't know anything about the project that you are investing in, how can you be so confident? unless you are a blind who will invest into something that you didn't know in the first place because that's not how you trade. For example Bitcoin. a lot of people don't know Bitcoin's past and history so newbies tend to panic and sell while veterans buy more and hold.