Theoretically correct but in real life risk depends of 2 factors at least:
- What do you do?
- Who does it?
Even ab idiot can start to daytrade, nobody has to do a test before trading. All that is required is money. Because almost every trader thinks he is much better than the average trader a lot of diasters happen. Let daytrader do a test an at least 50% of the candidates will not be allowed to daytrade. Which will reduce risk massively. For the top 20% of traders the risk is totally different then for the 50% lowest traders. And the test will not have any consequences for the top 20. Consequences will be huge for the lowest 50% (or rather the lowest 85%).
If I drive at 200 miles an hours with my car, risk is at least 10 times lower then if my girlfriend drives at 100 miles an hour. My girlfriend has no drivers licence.