>>> "Track warrants are simpler and less confusing than train orders." <<<

No, they aren't: You just have to know what they say.
This is like an American saying a Mexican is more confusing than an American because one can't understand the other.

>>> "They are simple and easy to use but can be hard to understand at first" <<<

I'm pretty sure you could utter the same statement about anything that requires a skill, train orders included.

PS> Train Orders had similar capacities for protecting work trains and limits. TOD was right: Anyone who proclaims superiority of one probably has no concept of the other.