I disagree with the bolded part. 5e is a system that places a great deal of trust in the DM.
A counterpoint to this would be, for example, 3e. 3e is a system that explicitly does not trust the DM. Arguably, 5e reversed the 3e/4e trend when it came to "trust" and went back to the TSR model- that's the whole "rulings, not rules."
The difference is that you are viewing "more options" as something that is trusting of a referee; that is not true. This is a divide as old as Kriegsspiel and Free Kriegsspiel; the more rules you have, the less trust you have in the referee to adjudicate based on their own individual experience or preferences.
That's why many OSR rules-lite (or FKR games) are necessarily "high trust." The lack of explicit rules or options requires high trust in the DM.
Now, games like 3e that are high complexity might require more knowledge and/or more system mastery by the DM (and/or players), but that's not the same as trust. IMO, YMMV, etc.