Experience is something that sum of all mistakes and this applies to trading.
Experience includes the good things as well. But as humans we tend to implicate the mistakes/bad things into experience more into it though its a collection of both.

Trading is tough than investing for inexperienced traders.
I dont understand why you are comparing experienced and inexperienced trades for how tough trading is than investing. All traders are putting their money into a new asset just for the sake of money making. Thats also investing. In my opinion in the crypto space the difference between the two is the time period of holding. Generally investors would dump at the first high while traders would sell at small bursts on every high and then buy back again at dips.
There are trading books that teachs the way how professional traders treats the plans regarding portfolio.
Books can teach you the theory but not the practical.

This is a nice discussion mate you are right only reading and reading will not give you any kind of experience you will have to work for it. So thats why I think people should start on right time but to gain experience you should start with small amount of money. It give opportunity but it ups to you to use it properly learn more and more.