This teaches psychology aspect of trading where one must be disciplined and strictly adhere to their trading plans. This is honourable, TBH, and exposes the good and flaws of the trading system and plans of the trader over time. This helps the trader avoid style-drift that has plagued many traders, and will surely make them accountable.
However, this is not the same as success. The trading system must work for it to be categorized as that.
Psychology aspects are always important in trading because these have a big impact on all trade, and staying disciplined surely increases the chances of success, but mostly people are looking for quick profit or having the mindset of quick riches and never thought about things like these because they are entering with the strategy of having quick and big profit, it always gives enough setbacks or losses, and then lives go on the wrong side, mostly never able to fight back. Categorization is having a good way of trading because it always helps to check flaws and also increase chances of success, but it never works easily because investors never try to understand consequences and weigh which is important before starting a trade in any case.