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From my understanding through the help of this forum no strategy when it comes to bitcoin investment is free from lose, one can't say there's zero percent of risk in any strategy, when it comes to trading you can't say experience and understanding don't play a role in making one successful, I have a friend who is into trading after his training he started trading he was having more lose than wins but as time goes on he started winning or gaining more than he lose and he said experience helped him to get to that point.
You are wrong when you said there's no understanding that can make someone a better trader, you can't compare someone that don't know the basis of trading to someone that has a good understanding and knowledge about trading, those that has more understanding, knowledge and experience will always do better than those that don't have.
We all know trading is risky so as other strategy too, no strategy is 100 percent free from loss or zero percent free, and trading too those it's own part in Bitcoin so
one can't tell people not to go into it one should only tell people about it's risk it's advantage and disadvantage let people choose there own part.Of course, anyone can do whatever they like and each person is ultimately responsible for the consequences of their own decided actions (or inactions).
If anyone ever asks me how to get into bitcoin and whether to trade or invest, then I would suggest investing and not trading, yet if they cannot resist but to trade, then I would suggest to start out by establishing a reasonable investment position in bitcoin, and if you are going to trade, then to trade no more than 10% the size of your bitcoin investment size.
Of course, many traders cannot resist limiting their trading size to 10% of the size of their bitcoin investors, since trading tends to have a lure to devolve into gambling so there is a desire to employ more and more and more capital, so a lot of traders are going to have difficulties prioritizing investing while perhaps limiting their trading as a way to learn.. because there is a inclination to get greedy with trading, so anyone attempting to limit themselves may well be able to still learn from the employment of trading techniques if they can resist temptations to fall too deep into it.