Trading will do more harm than good to newbies who want to go far in Bitcoin because it is a bit complex and require serious technical knowledge and experience to succeed. A newbie does not possible have this knowledge and emotional maturity to handle trading. The best for newbies is to simply buy and HODL Bitcoin, this being an easy thing anybody can do. If in the future he consider venturing into trading, let it be that he has enough capital to pursue it because when a trader knows he has backup capital, it helps with balancing the psychological needs and remove the FOMO and other fears. So, rather than trading, newbies should focus more on building their Bitcoin portfolio first before anything else.
Actually, you are right but in most of the cases you will that the most new traders are starting their trading with the altcoin and short-term trading. If I say my trading history it is also with the altcoin and also I have faced loss in my first trading. The things you have mentioned it is seems that you are describing my newbie time on this sector.
However, if one more year had not passed for me to fully understand the market of bitcoin and to understand the long-term investment benefit of bitcoin, maybe I could have adopted some bitcoins at a more dip down.